Fire and Police Pension Assoc v. Abiomed, Inc. , 778 F.3d 228 ( 2015 )


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  •             United States Court of Appeals
    For the First Circuit
    No. 14-1502
    FIRE AND POLICE PENSION ASSOCIATION OF COLORADO;
    CITY OF AUSTIN POLICE RETIREMENT SYSTEM,
    Plaintiffs, Appellants,
    and
    KARSE SIMON, individually and on behalf of all others
    similarly situated; ARLENE SIMON, individually and
    on behalf of all others similarly situated; OKLAHOMA
    POLICE PENSION AND RETIREMENT SYSTEM; CITY OF HOLLYWOOD
    (FL) EMPLOYEES' RETIREMENT FUND; TULARE COUNTY EMPLOYEES'
    RETIREMENT ASSOCIATION; ORLANDO POLICE PENSION FUND,
    Plaintiffs,
    v.
    ABIOMED, INC.; MICHAEL R. MINOGUE; ROBERT L. BOWEN,
    Defendants, Appellees.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF MASSACHUSETTS
    [Hon. F. Dennis Saylor, IV, U.S. District Judge]
    Before
    Lynch, Chief Judge,
    Souter,* Associate Justice,
    and Selya, Circuit Judge.
    *
    Hon. David H. Souter, Associate Justice (Ret.) of the
    Supreme Court of the United States, sitting by designation.
    Patrick T. Egan, with whom Kristin J. Moody, Daryl DeValerio
    Andrews, Berman DeValerio, Robert D. Klausner, and Klausner,
    Kaufman, Jensen & Levinson were on brief, for appellants.
    John D. Donovan, Jr., with whom Daniel V. Ward, Matthew
    Mazzotta, Elizabeth D. Johnston, Dara A. Reppucci, and Ropes & Gray
    LLP were on brief, for appellees.
    February 6, 2015
    LYNCH, Chief Judge.       Not all claims of wrongdoing by a
    company make out a viable claim that the company has committed
    securities fraud.       This case is an example.
    Institutional investors, asserting claims on behalf of a
    putative class of purchasers of the stock of defendant Abiomed,
    Inc.,1 brought suit against Abiomed and two of its officers,
    Michael Minogue and Robert Bowen, alleging that all defendants
    committed securities fraud in violation of section 10(b) of the
    Securities Exchange Act of 1934, 15 U.S.C. § 78j(b), and SEC Rule
    10b-5; and that the individual defendants violated section 20(a) of
    the Act, 15 U.S.C. § 78t(a). The alleged misleading statements and
    omissions concerned Abiomed's flagship product, a micro heart pump
    called the Impella Recover LP 2.5.             The complaint alleges that
    defendants told investors that its policy was to avoid off-label
    marketing of the Impella 2.5, when in fact defendants "were
    orchestrating     and     engaged    in     widespread    off-label     market
    promotion."     And when the Food and Drug Administration (FDA)
    initiated     inquiries    into     the     company's    marketing    tactics,
    defendants told investors that it was "cooperating" with the agency
    and "working to resolve [a] few discrete issues," when in fact the
    1
    The named plaintiffs are Fire and Police Pension
    Association of Colorado, City of Austin Police Retirement System,
    Oklahoma Police Pension and Retirement System, City of Hollywood
    (FL) Employees' Retirement Fund, Tulare County Employees'
    Retirement Association, Orlando Police Pension Fund, and individual
    investors Karse and Arlene Simon.
    -3-
    company was "trivializing the concerns" and "continuing to off-
    label market."
    The district court dismissed the complaint on the ground
    that plaintiffs had not pleaded facts giving rise to a "'cogent and
    compelling'" inference of scienter, as is required under the
    Private Securities Litigation Reform Act of 1995 ("PSLRA"), Pub. L.
    No. 104-67, 109. Stat. 737.     Simon v. Abiomed, Inc., No. 12-12137-
    FDS, 
    2014 WL 1413638
    (D. Mass. Apr. 10, 2014) (citation omitted).
    We affirm.   The district court correctly held that the
    pleadings are insufficient to establish the requisite inference of
    scienter.    Even assuming that plaintiffs plausibly alleged that
    defendants made false or misleading statements which had a material
    effect on Abiomed's stock price -- a matter that is far from
    clear -- plaintiffs have not sufficiently alleged that defendants
    made those statements with the "conscious intent to defraud or 'a
    high degree of recklessness.'"       ACA Fin. Guar. Corp. v. Advest,
    Inc., 
    512 F.3d 46
    , 58 (1st Cir. 2008) (quoting Aldridge v. A.T.
    Cross Corp., 
    284 F.3d 72
    , 82 (1st Cir. 2002)).
    I.   Factual Background
    We draw the following statement of facts from plaintiffs'
    Amended Class Action Complaint and from materials defendants filed
    in the district court in support of their motion to dismiss.2
    2
    These materials consist of correspondence between the FDA
    and Abiomed and public records, such as Abiomed's filings with the
    SEC. Neither party disputes that the court may properly consider
    -4-
    A.         The Parties
    Defendant     Abiomed   is    a   Massachusetts-based       company
    employing approximately 150 people which develops, manufactures,
    markets and sells medical devices designed for circulatory support.
    Minogue is Abiomed's CEO, and Bowen is its CFO.             Plaintiffs are a
    class of entities and individuals who purchased Abiomed stock from
    August 4, 2011, to October 31, 2012 (the "Class Period").
    The allegations in the complaint are based in part on
    interviews with confidential witnesses who are former employees of
    Abiomed.        Confidential     Witness     1    ("CW1")    "worked    in     a
    clincial/surgical support position as a clinical representative
    from March 2011 until April 2012."               According to CW1, Abiomed
    employees were in close proximity to one another, and Minogue and
    Bowen were very "hands-on" leaders.
    The Impella 2.5, "a percutaneous micro heart pump with an
    integrated motor and sensors" that "can pump up to 2.5 liters of
    blood per minute," is Abiomed's most important product.            In fiscal
    year (FY) 2012, 85% of Abiomed's revenues came from sales of
    Impella products, and "most" of that revenue came from the sales of
    the   Impella   2.5.   The     Impella    2.5's    main   competitor   is    the
    these materials. See Watterson v. Page, 
    987 F.2d 1
    , 3 (1st Cir.
    1993) (noting that, in ruling on a motion to dismiss, court may
    consider "documents the authenticity of which are not disputed by
    the parties; [] official public records; [] documents central to
    plaintiffs' claim; or [] documents sufficiently referred to in the
    complaint").
    -5-
    intra-aortic balloon pump (IABP), which is much cheaper and more
    widely used than the Impella 2.5.
    B.           The FDA's Regulation of Medical Devices
    The FDA regulates the labeling and marketing of medical
    devices pursuant to the Food, Drug, and Cosmetics Act (FDCA).
    Under section 510(k) of the FDCA, the agency can "clear" a device
    that is substantially equivalent in safety and effectiveness to an
    existing approved device and thereby allow the device to be used
    for the same intended purposes.           The FDA may also grant an
    investigational device exemption ("IDE") to a company to allow it
    to use a device in a clinical study to test its safety and
    efficacy.
    Under FDA regulations, a company is not allowed to market
    a device for a use for which it has not been approved -- that is,
    an "off-label" use.     However, the FDA does not prohibit physicians
    and hospitals from off-label use of medical devices, and a medical
    device company is allowed to respond to unsolicited requests from
    physicians     for   information   regarding   off-label   uses   of   the
    company's products.     FDA regulations also prohibit a company with
    an IDE from representing that the device is safe and effective for
    the purpose for which it is being tested.
    C.           The Protect II and Recover II Studies
    In August 2007, Abiomed received an IDE from the FDA that
    allowed it to begin a clinical trial comparing the performance of
    -6-
    the Impella 2.5 to that of the IABP during high-risk percutaneous
    coronary interventions ("PCIs"), commonly known as angioplasties
    (the "Protect II Study"). The study's purpose was to measure major
    adverse    events   suffered   by    patients   30   days   after   the   PCI
    procedure.
    On December 6, 2010, Abiomed terminated the Protect II
    Study after finding that the Impella 2.5 did not achieve superior
    outcomes compared with the IABP at the 30-day endpoint.             However,
    Abiomed continued to collect and analyze data from the study, and
    the study eventually yielded "exploratory" results "suggesting a
    possible benefit for the device at 90 days."                The study was
    published in September 2012 in Circulation, a peer-reviewed medical
    journal.
    In March 2008, Abiomed received an IDE for a second study
    (the "Recover II Study") designed to compare the Impella 2.5 to the
    IABP in hemodynamically unstable patients undergoing a PCI due to
    an acute myocardial infarction ("AMI"), more commonly known as a
    heart attack. The Recover II Study was suspended in September 2009
    and eventually terminated due to insufficient enrollment.
    D.           510(k) Clearance for the Impella 2.5, the Alleged
    "Pervasive" Scheme of Off-Label Marketing, and the FDA's
    Response
    In June 2008, pursuant to the 510(k) process, Abiomed
    received   clearance    from   the   FDA   to   market   and   commercially
    distribute the Impella 2.5 for partial circulatory support for up
    -7-
    to six hours.   Under FDA regulations, to repeat, Abiomed was not
    permitted to market or promote the Impella 2.5 for any other use.
    Plaintiffs allege that defendants flouted these regulations and
    "engage[d] in widespread improper promotion and marketing of the
    Impella 2.5."   They make the following specific allegations in
    support of that claim.
    1.     The January 2010 Untitled Letter
    On January 28, 2010, the FDA sent Abiomed an Untitled
    Letter objecting to certain of Abiomed's activities promoting the
    Impella 2.5.    Untitled Letters are intended to address alleged
    regulatory violations that do not meet the threshold for regulatory
    significance warranting a Warning Letter.   They "do[] not include
    a warning that a company's failure to take prompt corrective steps
    could lead to an enforcement action."   Simon, 
    2014 WL 1413638
    , at
    *3 n.2 (citing U.S. Food & Drug Admin., Regulatory Procedures
    Manual: Advisory Actions, 
    2004 WL 3363386
    , at *24 (2010)).
    The FDA stated that Abiomed had improperly "promot[ed]
    the Impella 2.5 for high risk PCI and AMI" and represented that the
    Impella 2.5 was superior to the IABP in those uses.   Essentially,
    in the FDA's view, Abiomed's promotional materials represented that
    the device was effective for uses for which it was being tested
    under the Protect II and Recover II IDEs, which constituted a
    violation of FDA regulations.
    -8-
    Abiomed responded to the FDA letter on March 4, 2010,
    stating that it "now recognize[d]" that the challenged promotions
    had made improper efficacy claims and that it would revise its
    marketing materials in order to remove the offending statements.
    Abiomed also represented that it had "strengthened its review
    process" for promotional materials.
    The FDA viewed this response as inadequate, however, and
    Abiomed made further changes to its advertisements and reviewed its
    marketing materials and website to ensure that "there were no other
    materials" beyond those identified by the FDA that made improper
    safety or efficacy claims.        On April 20, 2010, the FDA wrote
    Abiomed stating that its "response appear[ed] adequate" and that no
    further action was necessary.      Abiomed did not publicly disclose
    this correspondence with the FDA at that time.
    2.     The June 2011 Warning Letter
    Over a year later, on June 10, 2011, the FDA issued an
    official Warning Letter to Abiomed stating that the company's
    "marketing materials continued to improperly compare the Impella
    2.5 to the IABP and promote the device for non-cleared uses."         A
    Warning Letter is a step above an Untitled Letter in the FDA's
    enforcement hierarchy.      It communicates that the FDA believes the
    regulated    entity   has   committed    a   violation   of   regulatory
    significance but does not commit the FDA to taking enforcement
    action.   Simon, 
    2014 WL 1413638
    , at *3 n.2 (citing U.S. Food & Drug
    -9-
    Admin., Regulatory Procedures Manual: Advisory Actions, 
    2004 WL 3363386
    , at *1-2 (2010)).
    The   Warning    Letter      criticized    an   Abiomed   magazine
    advertisement that pictured a hand puncturing a red balloon and
    suggested that the Impella 2.5 was superior to the IABP "for
    circulatory support in the Cath lab."                  The FDA's letter also
    complained about the Abiomed slogan, "Recovering Hearts, Saving
    Lives," which the FDA stated would require a study under an IDE "to
    evaluate    whether    the    device   could    salvage      heart   tissue   and
    muscle."3     Finally, the agency took issue with a claim at a
    conference of cardiovascular physicians that the Impella could
    improve hemodynamics and cardiac output in AMI Shock patients,
    since those indications also needed to be supported with a study
    performed under an IDE.
    The Warning Letter was posted on the FDA's website.               An
    Abiomed spokeswoman stated publicly that the "letter addresses
    specific promotional items from 2010. . . .               We are working with
    the FDA to ensure all of our promotional materials comply with the
    agency moving forward."        According to CW1, however, Abiomed senior
    management     did    not    take   the    warning     letter   seriously     and
    "trivialized the FDA concerns."           CW2, "a senior quality compliance
    3
    The FDA subsequently revised its position on the slogan,
    "stat[ing] that [it] had decided to leave the tagline issue alone"
    and asking only that the company not claim that the Impella 2.5
    could "Recover Heart Muscle."
    -10-
    and validation engineer at Abiomed from April 2008 through March
    2011," likewise said that "Abiomed 'didn't change anything' after
    being notified by the FDA."
    In July 2011, at Abiomed's request, the FDA held a
    "clarification call" with Abiomed to discuss the Warning Letter.
    The   FDA   reminded    Abiomed    of    the   Impella   2.5's   very   limited
    clearance and told them to refrain from comparing the device to the
    IABP.   One agency member noted that Abiomed "should have had some
    awareness of the issues given" the January 2010 Untitled Letter.
    In August 2011, Abiomed sent a formal response letter to
    the FDA discussing the actions it had taken to address the FDA's
    concerns.     The company stated that it would not run the balloon
    advertisement again and would ensure that the advertisement did not
    exist on Abiomed's website, and that it had removed materials
    related to the cardiovascular conference from the website.                  The
    letter also stated that Abiomed would put into place a plan to
    prevent future violations.         Abiomed did not receive any follow-up
    correspondence from the FDA for several months.
    3.       The Off-Label Marketing Allegedly Continues
    Plaintiffs allege that, even in the wake of the June 2011
    Warning     Letter,    Abiomed    continued    to   "engage[]    in   pervasive
    off-label marketing of the Impella 2.5 beyond its FDA cleared
    indications."     For example, during a February 2012 episode of the
    CNBC program "Mad Money," Minogue suggested that the Impella 2.5
    -11-
    could be used in patients experiencing heart attacks, and he held
    up an IABP and an Impella 2.5 side by side and stated that the
    latter was "cost effective." Also, Abiomed made repeated claims in
    SEC filings and conference calls regarding the efficacy of the
    Impella 2.5 based on the results of the Protect II Study.
    Plaintiffs also allege that Abiomed trained its sales and
    clinical staff to compare the Impella 2.5 to the IABP and to
    "prompt and steer physicians to ask about off-label uses of the
    Impella 2.5."     CW1 and CW5, a "clinical representative at Abiomed
    from February 2012 until February 2013," said they were provided
    with "talking points" about the Protect II Study and encouraged to
    "discuss the superiority of the Impella 2.5 over the IABP."                  CW2
    stated that Abiomed senior management "knew Abiomed did not have
    the clinical studies to support the claims they were making." CW3,
    "an account manager at Abiomed from September 2008 until the end of
    March 2011," relayed similar concerns to senior management and was
    "blown   off."         CW7,   "a   director     of   clinical   operations   for
    Abiomed . . . from February 2009 until November 2011," stated that
    Abiomed promoted the Impella 2.5 for use in procedures that take
    longer   than    six    hours.      CW4,   "a    clinical   representative   in
    cardiology at Abiomed . . . from August 2007 until September 2010,"
    -12-
    stated that Abiomed "help[ed] doctors identify candidates to use
    the Impella 2.5 on, including high-risk PCI patients."4
    On February 24, 2012, Abiomed and the FDA "had a meeting,
    in    part   to   discuss   Abiomed's   improper   marketing    practices."
    Plaintiffs allege that Abiomed "never disclosed the true purpose of
    this meeting," instead stating in a later filing with the SEC that
    the meeting was held to "present the final results of the Protect
    II Study" and to discuss other unrelated matters.
    4.       The April 2012 Letter
    In April 2012, the FDA sent another letter to Abiomed
    asserting that its promotional materials were still improperly
    marketing the Impella 2.5. The FDA noted that the "AbiomedImpella"
    YouTube channel included several videos discussing unapproved uses
    of the Impella 2.5, and that the company's website contained a link
    to "Patient Stories" describing unapproved uses of the device. The
    agency also objected to Minogue's statements on the "Mad Money"
    episode.     The letter stated that these examples "represent[ed] a
    fraction of the objectionable claims regarding the Impella," and
    the   agency      threatened   enforcement   action   "absent   prompt   and
    effective corrections."
    4
    Plaintiffs include these allegations in the section of
    the complaint detailing Abiomed's allegedly improper marketing
    after the Warning Letter was issued, but they do not provide any
    indication of the specific time period to which the confidential
    witnesses' observations correspond.
    -13-
    Abiomed disclosed this FDA letter in its 2012 10-K, filed
    with the SEC on June 4, 2012.          The company announced that it had
    "received a follow up letter from the FDA stating that some of our
    promotional materials continued to market the Impella 2.5 in ways
    that are not compliant with FDA regulations" and that it was
    "cooperating with the FDA in addressing its concerns."
    5.          The August 2012 Meeting with              the   FDA   and
    Subsequent Compliance Audits
    On August 7, 2012, the FDA and Abiomed met again, again
    at Abiomed's request.         "[T]he primary objective of the meeting was
    to present Abiomed's actions to close-out the Warning Letter and
    maintain compliance and then have a discussion as to whether
    Abiomed was meeting FDA requirements."          After Abiomed detailed the
    measures it was taking to ensure compliance with the regulations,
    an FDA representative "suggested that Abiomed 'take a step back'"
    because "[h]e saw the corrective actions as too targeted, and not
    addressing the whole labeling program."             Another representative
    commented that the FDA did "not think of the clearances of the
    product in the same way Abiomed does."            The FDA was "frustrated"
    because   it    felt   that    regulatory    violations   were    "happen[ing]
    repeatedly."     Minogue responded that "Abiomed had to comply, and
    will comply," but that, because Abiomed was such a small company,
    it was "critical to market the device."             An FDA representative
    opined that "it would involve 'walking a fine line' to stay in
    compliance while marketing."           The meeting closed with the FDA
    -14-
    admonishing Abiomed that it took the matter "very seriously," "that
    a Warning Letter is the last communication given, [and] that
    Abiomed needed to do a systemic review of its procedures in order
    to give the [agency] a systemic response for compliance."
    In   the    late     summer   of   2012,   the    FDA    conducted   a
    compliance audit of Abiomed, and Abiomed simultaneously conducted
    its own internal audit.           After those audits, Abiomed pulled its
    marketing and training materials "for compliance reasons" and did
    not   put   up   replacement      materials     for    several      months.   The
    replacement materials, according to CW5, were "extremely limited
    compared to what they had previously" -- for example, they no
    longer included slides about the Protect II Study.                        Abiomed
    confirmed in a letter to the FDA dated August 20, 2012, that it
    understood its prior approach to compliance was "too narrow in
    focus" and so was "adopting a broad, systemic approach to address
    the issues raised by FDA."          This approach included "destroy[ing]
    the   Impella    marketing        brochures    cited     by   FDA,     stopp[ing]
    distribution of all marketing labeling, recall[ing] all marketing
    labeling held by Abiomed field personnel, and stopp[ing] any
    planned updates to all labeling and the [Abiomed] website."
    6.         The U.S. Attorney's Office Investigation
    On November 1, 2012, Abiomed disclosed that the U.S.
    Attorney's Office for the District of Columbia had begun an
    investigation     into     its    marketing     and    promotional      practices
    -15-
    regarding the Impella 2.5.     "Abiomed also maintained its Impella
    revenue guidance at approximately 30% for the fiscal year, despite
    45% growth through the first half of the year, implying a marked
    slowdown during the second half of the year . . . ."              Minogue
    disclosed the FDA's compliance audit in a conference call conducted
    the same day and stated that Abiomed "ha[d] taken extensive actions
    to correct [its] noted compliance issues identified in [its] annual
    report."    Abiomed's stock price fell from $19.82 per share to
    $13.61 per share on November 1, a drop of approximately 32%.
    7.      The February 2013 FDA Close-Out Letter
    On February 19, 2013, the FDA issued a "Close-Out Letter"
    to Abiomed stating that the agency had completed its evaluation of
    Abiomed's corrective actions taken in response to the Warning
    Letter and had determined that Abiomed had adequately addressed
    those   violations.     Abiomed's    stock   price   recovered   from   the
    November 2012 fall.    As of May 20, 2013, the stock was trading at
    $23.11 per share.
    E.          Defendants' Allegedly False and Misleading Statements
    Plaintiffs allege that, between August 4, 2011, and
    October 31, 2012, defendants made specific false and misleading
    statements that "deceived the investing public" and caused the
    plaintiffs to purchase Abiomed stock at artificially inflated
    prices.    These statements fall into three principal categories.
    -16-
    First, plaintiffs allege that several of defendants'
    statements about the growth of Impella product revenues were false
    and   misleading   because   Abiomed   "failed   to   disclose    that   the
    reported revenue growth was substantially the result of off-label
    marketing."   Defendants either provided no explanation for the
    growth or attributed the revenues to sources such as "increased
    Impella 2.5 utilization in the cath lab."        Plaintiffs allege these
    statements were misleading because "they failed to disclose that
    Abiomed's continued revenue . . . was at risk should the Company be
    forced to discontinue [its marketing] practices."                Defendants
    allegedly made these statements in an August 2011 press release and
    conference call announcing Abiomed's first quarter 2012 ("Q1 2012")
    earnings; in Abiomed's Q1 2012 10-Q; in a November 2011 press
    release and conference call announcing Abiomed's Q2 2012 earnings;
    in Abiomed's Q2 2012 10-Q; in a February 2012 press release and
    conference call announcing Abiomed's Q3 2012 earnings; in Abiomed's
    Q3 2012 10-Q; in a May 2012 press release and conference call
    announcing Abiomed's Q4 2012 earnings; in Abiomed's 2012 Form 10-K;
    and in an August 2012 press release and conference call announcing
    Abiomed's Q1 2013 earnings.
    Second, defendants allegedly continued to compare the
    Impella 2.5 to the IABP based on the results of the Protect II
    Study, even though FDA regulations prohibited Abiomed from doing
    so. For example, plaintiffs cite Minogue's statements in an August
    -17-
    2011 conference call that, according to the study, Impella patients
    "had significantly better outcomes at 90 days" relative to IABP
    patients.        Defendants   allegedly       made   similar   statements      in
    Abiomed's Q1 2012 10-Q; in Abiomed's Q2 2012 10-Q; in a February
    2012 press release and conference call concerning Abiomed's Q3 2012
    results;    on   the   February   7,    2012,   episode   of   Mad    Money;   in
    Abiomed's 2012 Form 10-K; and in an August 2012 conference call.
    Plaintiffs also allege that Abiomed's May 2012 disclosure of the
    February 24, 2012, meeting with the FDA was false and misleading
    because it "failed to disclose that the purpose of the meeting was
    to discuss Abiomed's improper marketing of the Impella 2.5 . . .
    and the FDA's safety concerns with the device related to the
    Protect II Study."
    Third,     plaintiffs      allege   that   many    of    defendants'
    statements concerning the regulatory back-and-forth between Abiomed
    and the FDA were false and misleading.               Defendants claimed that
    Abiomed policy was to refrain from off-label marketing and that
    Abiomed was taking steps to resolve the FDA's concerns, but in fact
    Abiomed was "engaged in widespread management-directed off-label
    marketing and promotion of the Impella 2.5 . . . and was not
    properly addressing the FDA's issues."           In particular, plaintiffs
    cite the following statement, some version of which was contained
    in Abiomed's Q1 2012 10-Q, Q2 2012 10-Q, and Q3 2012 10-Q:
    Although our policy is to refrain from
    statements that could be considered off-label
    -18-
    promotion of our products, the FDA or another
    regulatory agency could disagree and conclude
    that we have engaged in off-label promotion.
    In June 2011, we received a warning letter
    from the FDA stating that some of our
    promotional materials marketed the Impella 2.5
    for uses that had not been approved by the
    FDA.   We have cooperated with the FDA in
    addressing its concerns and believe that we
    have   resolved   the   matter   without   any
    penalties.    Although we believe that this
    issue has been resolved, if similar matters
    come up in the future, we may not be able to
    resolve them without facing significant
    consequences.
    Abiomed's 2012 Form 10-K, filed on June 4, 2012, used similar
    language, and added:
    [I]n April 2012, we received a follow up
    letter from the FDA stating that some of our
    promotional materials continued to market the
    Impella 2.5 in ways that are not compliant
    with FDA regulations. We are cooperating with
    the FDA in addressing its concerns. While we
    hope to be able to resolve this matter without
    incurring penalties, we may not be able to
    resolve it, or any similar matters that may
    come up in the future without facing
    significant consequences. Such matters could
    result in reduced demand for our products and
    would have a material adverse effect on our
    operations and prospects.
    Finally, the complaint alleges that the certifications of
    Minogue and Bowen contained in the Form 10-Qs and the Form 10-K
    were false and misleading because the forms did not "fairly present
    in all material respects the financial condition [of Abiomed],
    including the reliance on off-label marketing, and that the revenue
    and growth reported therein was the result of undisclosed, illicit
    and unsustainable off-label marketing."
    -19-
    Plaintiffs make additional allegations that they argue
    bolster the inference that defendants had the requisite scienter
    (that is, that they had the conscious intent to defraud investors
    or acted with a high degree of recklessness).          First, they contend
    that Minogue, Bowen, and other senior Abiomed executives sold an
    uncharacteristically large amount of stock during the Class Period.
    Minogue   allegedly    sold    586,149    shares      of   Abiomed   stock,
    representing 48% of his holdings, for a total of $9,636,124 from
    January 2010 through the end of the Class Period.               Bowen sold
    57,919 shares, representing 6.5% of his holdings, for $1,302,878
    during that period, after having sold no stock before January 2010.
    Plaintiffs   cite   similar   figures    for   five   other   non-defendant
    Abiomed executives, who collectively earned approximately $5.6
    million by selling stock during this period.
    Defendants counter that many of the trades cited by
    plaintiffs were made pursuant to 10b5-1 plans which were entered
    into before the Class Period (August 4, 2011, to October 31, 2012)
    and Minogue in fact increased his holdings of Abiomed stock during
    the Class Period.     Defendants also counter that the reason Bowen
    made no trades prior to the cited period was because he only became
    eligible to trade Abiomed stock during that period.
    Plaintiffs also allege that, because the Impella 2.5 was
    part of Abiomed's "core business," Minogue and Bowen must have been
    aware of the fact that Abiomed was unlawfully promoting the device,
    -20-
    and that "the pervasiveness of the illicit and off-label marketing
    and promotion of the Impella 2.5 . . . further supports a strong
    inference of scienter."
    F.          Summary
    Distilled to its essence, plaintiffs' complaint tells the
    following story: For a 38-month period, beginning with the FDA's
    Untitled Letter in January 2010 and ending with the FDA's Close-Out
    Letter in February 2013, the FDA repeatedly raised concerns that
    Abiomed's   marketing    of    the   Impella    2.5       did   not    comply   with
    applicable regulations.        Abiomed responded to these concerns by
    making limited changes to its promotional tactics, but the FDA was
    not satisfied until the summer of 2012, when Abiomed conducted an
    internal compliance audit and pulled all of its marketing and
    training    materials,   to    be    replaced      with    entirely      new    ones.
    Confidential witnesses cited in the complaint state that Abiomed's
    senior management was aware that its promotional practices before
    that audit were in violation of FDA regulations and willfully chose
    not to alter them.       We note that might raise issues under FDA
    regulations.
    What   raises     securities     law    concerns,         according    to
    plaintiffs, is that management allegedly misled investors during
    this period by (1) failing to attribute the growth in Impella
    revenues to unlawful off-label marketing practices; (2) improperly
    comparing the Impella 2.5 to the IABP by touting the results of the
    -21-
    Protect II Study; (3) stating that it had a policy of not engaging
    in off-label marketing; and (4) stating that Abiomed was taking
    steps to address the agency's concerns, when in fact the company
    was engaged in intentional and pervasive off-label marketing,
    contrary to its stated policy.
    II.   Litigation Procedural History
    On November 16, 2012, two individuals filed a complaint
    on behalf of all purchasers of Abiomed stock during the Class
    Period. Simon, 
    2014 WL 1413638
    , at *10.         In February 2013, the
    district court appointed the two appealing institutional investors
    as lead plaintiffs, and the lead plaintiffs filed an amended
    complaint on May 20, 2013.     
    Id. On April
    10, 2014, the district court, in a thorough
    opinion, granted defendants' motion to dismiss.         The court found
    that plaintiffs had plausibly alleged that Abiomed engaged in
    off-label marketing practices and that those practices materially
    affected the stock price.     
    Id. at *12-16.
       It also held that the
    plaintiffs      had     plausibly     alleged    several     actionable
    misrepresentations: (1) Abiomed's statements that its policy was to
    refrain from off-label marketing; (2) Abiomed's statements that
    Impella revenue growth was attributable to "particular primary
    source[s]" other than off-label uses; and (3) Abiomed's statements
    about the Protect II Study "[t]o the extent [they were made] to
    promote off-label marketing."       
    Id. at *16-20.
      However, the court
    -22-
    found that the complaint's allegations of scienter were not "cogent
    and compelling," as is required for pleadings in securities fraud
    cases.     
    Id. at *20-23.
               The court also dismissed plaintiffs'
    § 20(a) claims because such a violation "depend[s] on an underlying
    violation of the Exchange Act."             
    Id. at *23.
    This appeal followed. Plaintiffs argue that the district
    court erred in holding that they failed to adequately plead
    scienter and that the court should have granted them leave to file
    an amended complaint.
    III.       Section 10 and Rule 10b-5 Claim
    A.          Legal Standard
    "Section 10(b) of the Securities Exchange Act of 1934
    forbids the 'use or employ, in connection with the purchase or sale
    of   any   security    .    .   .,   [of]   any   manipulative   or   deceptive
    device . . . ."   Tellabs, Inc. v. Makor Isssues & Rights, Ltd., 
    551 U.S. 308
    , 318 (2007) (first and second alterations in original)
    (quoting 15 U.S.C. § 78j(b)).               SEC Rule 10b-5 implements that
    statute by making it unlawful, inter alia,
    [t]o make any untrue statement of a material
    fact or to omit to state a material fact
    necessary in order to make the statements made
    . . . not misleading, or . . . [t]o engage in
    any act, practice, or course of business which
    operates or would operate as a fraud or deceit
    upon any person, in connection with the
    purchase or sale of any security.
    
    Id. (second alteration
    in original) (quoting 17 C.F.R. § 240.10b-5)
    (internal quotation marks omitted).
    -23-
    "To state a claim for securities fraud under Section
    10(b), a plaintiff must allege: (1) a material misrepresentation or
    omission; (2) scienter, or a wrongful state of mind; (3) in
    connection with the purchase or sale of a security; (4) reliance;
    (5) economic loss; and (6) loss causation."                 Deka Int'l v. Genzyme
    Corp. (In re Genzyme Corp. Sec. Litig.), 
    754 F.3d 31
    , 40 (1st Cir.
    2014).
    The    PSLRA   requires     a    securities     fraud    complaint   to
    "'specify each statement alleged to have been misleading [and] the
    reason or reasons why the statement is misleading.'" ACA 
    Fin., 512 F.3d at 58
        (alteration     in       original)     (quoting       15   U.S.C.
    § 78u-4(b)(1)). While this case turns on scienter, we also discuss
    the requirements for materiality, as the materiality and scienter
    inquiries are linked.         See City of Dearborn Heights Act 345 Police
    & Fire Ret. Sys. v. Waters Corp., 
    632 F.3d 751
    , 756-58 & n.2 (1st
    Cir. 2011).         "A fact is material when there is 'a substantial
    likelihood' that a reasonable investor would have viewed it as
    'significantly        alter[ing]    the       total   mix   of     information    made
    available.'"        
    Id. at 756
    (alteration in original) (quoting Basic
    Inc. v. Levinson, 
    485 U.S. 224
    , 231–32 (1988) (internal quotation
    marks omitted)). "A statement can be 'false or incomplete' but not
    actionable          'if    the     misrepresented           fact      is    otherwise
    insignificant.'"          
    Id. at 756
    -57 (quoting 
    Basic, 485 U.S. at 238
    ).
    -24-
    "The PSLRA also separately imposes a rigorous pleading
    standard on allegations of scienter."              ACA 
    Fin., 512 F.3d at 58
    .
    "Scienter     is    a   'mental    state    embracing     intent    to    deceive,
    manipulate, or defraud.'"          Waters 
    Corp., 632 F.3d at 757
    (quoting
    Ernst & Ernst v. Hochfelder, 
    425 U.S. 185
    , 193 n.12 (1976)).                     A
    complaint will survive a motion to dismiss only if it states with
    particularity facts giving rise to a "strong inference" that
    defendants acted with a conscious intent "to deceive or defraud
    investors by controlling or artificially affecting the price of
    securities" or "acted with a high degree of recklessness."                    
    Id. (citations omitted)
    (internal quotation marks omitted); accord ACA
    
    Fin., 512 F.3d at 58
    -59.           Recklessness, as used in this context,
    "does not include ordinary negligence, but is closer to being a
    lesser form of intent."           Greebel v. FTP Software, Inc., 
    194 F.3d 185
    , 188 (1st Cir. 1999).
    An inference of scienter is "strong" if "a reasonable
    person would deem [it] cogent and at least as compelling as any
    opposing    inference     one     could    draw   from    the    facts   alleged."
    
    Tellabs, 551 U.S. at 324
    .      "When   there    are    equally   strong
    inferences for and against scienter, the draw is awarded to the
    plaintiff."       Waters 
    Corp., 632 F.3d at 757
    .          "[S]cienter should be
    evaluated with reference to the complaint as a whole rather than to
    piecemeal allegations."           ACA 
    Fin., 512 F.3d at 59
    .         "There is no
    set pattern of facts that will establish scienter; it is a case-by-
    -25-
    case inquiry."   
    Id. at 66.
      We review de novo the district court's
    dismissal of the complaint for failure to state a claim.     
    Id. at 58.
    Plaintiffs seize on several purported legal errors made
    by the district court.   They argue, for example, that the district
    court had an erroneous conception of the scienter required for a
    violation of the securities laws, failed to make a recklessness
    finding, and failed to properly weigh competing evidence.     Since
    our review of the dismissal is de novo, however, we need not attend
    separately to each of these arguments.5   Instead, we explain why we
    5
    We are skeptical of the merits of the arguments, in any
    event.   Plaintiffs contend that the district court erroneously
    required them to show that defendants had actual knowledge that
    their representations or omissions were misleading. But the court
    stated the correct standard ("a conscious intent to defraud or a
    high degree of recklessness") at the outset of its scienter
    discussion. Simon, 
    2014 WL 1413638
    , at *20. True, the court then
    stated that the defendant must have "actual knowledge that the
    representation of omission was misleading," see 
    id. at *20-21,
    but
    the focus on actual knowledge almost certainly reflects the fact
    that plaintiffs' theory of the case consistently has been that the
    higher-ups at Abiomed knew full well that what they were doing was
    wrong, and yet did it anyway.    Plaintiffs have not relied on a
    recklessness theory, and it is thus unsurprising that the district
    court spent little space in its opinion on the concept of
    recklessness.
    Plaintiffs also argue that the district court found that the
    inferences for and against scienter were equally strong and
    erroneously awarded that tie to the defendant. This contention
    wrests loose language from the district court's opinion out of
    context. The court did state that "it is equally reasonable to
    infer that senior management was merely negligent, inattentive, or
    even incompetent, rather than engaged in deliberate acts of
    securities fraud," 
    id. at *21,
    and that the insider sales provided
    "at best equivocal support of the proposition that defendants
    intended to defraud investors," 
    id. at *23.
    But elsewhere, the
    court correctly stated that a "tie goes to the plaintiff," 
    id. at *11,
    and its analysis, considered as a whole, shows that the
    inference of scienter was in fact less plausible than competing
    -26-
    agree       with      the       district      court's       ultimate      conclusion      that
    plaintiffs' complaint fails to state a claim under the PLSRA's
    pleading standards.6                 See Bryceland v. Minogue, 
    557 F. App'x 1
    , 3
    (1st       Cir.    2014)        (Souter,     J.)   ("[B]ecause      our    review    of    the
    dismissal         .   .     .    is    de    novo,     rather   than      answer    each    of
    [plaintiff]'s assignments of error, it will suffice to highlight
    the    deficiencies             in    her   complaint."      (citation     omitted));      cf.
    Aldridge v. A.T. Cross Corp., 
    284 F.3d 72
    , 84 (1st Cir. 2002)
    (noting that an appellate court may affirm a district court's
    decision on any grounds supported by the record).                          Plaintiffs have
    failed to show that defendants made the challenged statements with
    a     conscious       intent          to    defraud    or    with   a     high   degree     of
    recklessness.
    B.                Application
    Plaintiffs allege that defendants made the following
    misrepresentations that deceived investors: (1) statements about
    growth in Impella revenues that did not disclose that the growth
    was due to off-label marketing; (2) statements about the 90-day
    results of the Protect II Study that improperly compared the
    inferences. Cf. Connor B. ex rel Vigurs v. Patrick, 
    774 F.3d 45
    ,
    54 n.9 (1st Cir. 2014) (determining, based on a reading of the
    district court's opinion as a whole, that the "court did not
    misapprehend the correct [legal] standard," despite some isolated
    language suggesting otherwise).
    6
    Our discussion applies to the scienter analysis with
    respect to the individual defendants, Minogue and Bowen, as well as
    the corporate defendant, Abiomed.
    -27-
    Impella 2.5 to the IABP; (3) statements that Abiomed had a policy
    of not engaging in off-label marketing; and (4) statements that
    Abiomed was taking steps to address the FDA's concerns, when in
    fact the company was engaged in intentional and pervasive off-label
    marketing, contrary to its stated policy.           Plaintiffs' counsel
    conceded at oral argument that plaintiffs' case depends on the
    first, third, and fourth categories of statements.         Statements in
    the second category are simply examples of improper off-label
    marketing; those are relevant to this case only insofar as they
    show that the defendants' statements that they were not engaged in
    off-label marketing were untrue.7
    We   therefore   focus   on     defendants'   statements   about
    increased Impella revenues and their statements that Abiomed's
    policy was to comply with FDA regulations concerning off-label
    marketing and that the company was taking steps to address the
    agency's concerns regarding promotion of the Impella 2.5.              We
    address the revenue-related statements first, then turn to the
    statements regarding Abiomed's interactions with the FDA, and
    finally address the complaint's insider trading allegations.
    1.      Statements Regarding Increased Revenues
    7
    The district court reached the same conclusion.       See
    Simon, 
    2014 WL 1413638
    , at *20 (finding that, "[t]o the extent that
    defendants made statements concerning the Protect II study in order
    to promote off-label marketing, the statements may be actionable"
    because Abiomed claimed that it did not engage in off-label
    marketing, "[b]ut to the extent defendants simply gave accurate
    information about the study, it cannot form the basis of a claim of
    misrepresentation").
    -28-
    We assume arguendo that the district court correctly
    found that plaintiffs had alleged enough to survive dismissal on
    claims that Abiomed provided false explanations for Impella revenue
    growth.   See Simon, 
    2014 WL 1413638
    , at *17.            We hold that the
    statements are not actionable on scienter grounds.          We do address
    the strength of the materiality of the statements because "[t]he
    question of whether a plaintiff has pled facts supporting a strong
    inference of scienter has an obvious connection to the question of
    the extent to which the omitted information is material."           Waters
    
    Corp., 632 F.3d at 757
    .   "If it is questionable whether a fact is
    material or its materiality is marginal, that tends to undercut the
    argument that defendants acted with the requisite intent or extreme
    recklessness in not disclosing the fact."         
    Id. The materiality
      of    the     impugned    omission   here   --
    Abiomed's failure to state that some of the increased revenues were
    due to off-label marketing -- is marginal at best.            Plaintiffs'
    contention that the omission would have mattered to a reasonable
    investor depends on a long chain of inferences, most of which are
    not sufficiently substantiated by the allegations in the complaint.
    First, we would have to infer that, of the 85% of Abiomed
    revenue due to sales of Impella products, a substantial portion is
    due to sales of the Impella 2.5.          The complaint alleges that the
    Impella 2.5 accounted for "most" of that revenue, but provides no
    specifics.   Second, we would have to infer that, of the revenues
    -29-
    from the Impella 2.5, a substantial portion was due to purchases
    for off-label use by health care professionals.              The complaint
    provides no indication of the proportion of Impella 2.5 use that
    was off-label. Third, we would have to infer that, of the revenues
    from off-label use, a substantial portion of that use was due to
    off-label marketing of the device, and, further, that the portion
    was so significant as to undercut the company's projected growth
    figures.    And fourth, we would have to infer that the resulting
    undercutting of the growth figures was substantial enough to have
    a material effect on the stock price.               Again, the complaint
    provides no basis in fact for making these inferences.
    Plaintiffs    do   allege   that    off-label    promotion   was
    widespread, but they do not state or even suggest what proportion
    of sales were made as a result of such efforts, or the significance
    of the contribution of those sales to Abiomed's stock price.             The
    marginal    materiality   of   the   alleged    statements   and   omissions
    concerning revenues weighs against an argument that defendants here
    possessed the requisite scienter.           See Waters 
    Corp., 632 F.3d at 757
    .8
    8
    Plaintiffs' counsel contended at oral argument that we
    can infer that Abiomed's failure to disclose its off-label
    marketing activities was material because the company scaled back
    its revenue projections on November 1, after it "purged all of its
    off-label marketing materials." We think that unlikely, but more
    than that, it is much more plausible to infer that Abiomed lowered
    its revenue projections in light of the simultaneous announcement
    that the U.S. Attorney's Office had begun an investigation into the
    company.
    -30-
    Plaintiffs attempt an argument that defendants made
    statements about Abiomed's revenues with the intent to deceive
    investors or with reckless disregard as to whether investors would
    be deceived.     The argument is undercut by the fact that Abiomed
    explicitly warned investors both (a) that the FDA might disagree
    with the company's assessment of the legality of its marketing
    practices and (b) that, if the FDA took enforcement action against
    it, that "could result in reduced demand for our products and would
    have a material adverse effect on our operations and prospects."
    See Genzyme 
    Corp., 754 F.3d at 42-43
    (noting that a corporation's
    informative disclosures "undercut any inference of fraudulent
    intent on the part of defendants"); Waters 
    Corp., 632 F.3d at 760
    ("'[A]ttempts to provide investors with warnings of risks generally
    weaken   the   inference   of   scienter.'"   (alteration   in   original)
    (quoting Ezra Charitable Trust v. Tyco Int'l, Ltd., 
    466 F.3d 1
    , 8
    (1st Cir. 2006))).
    Further, the company did not withhold information about
    the FDA's concerns once the FDA issued a Warning Letter.9          Abiomed
    promptly disclosed receipt of the June 2011 Warning Letter and
    stated repeatedly throughout the Class Period that the FDA "could
    9
    "Section 10(b) does not create an affirmative duty to
    disclose." Genzyme 
    Corp., 754 F.3d at 41
    . Thus, there is no per
    se rule that a company immediately disclose receipt of any
    correspondence with the FDA. See 
    id. at 42
    (holding that a company
    need not immediately disclose a Form 483 issued by the FDA because
    it was "merely observational in nature, and d[id] not represent the
    FDA's final word").
    -31-
    disagree [with Abiomed's position that its marketing was lawful]
    and conclude that we have engaged in off-label promotion." Abiomed
    did not promise a positive resolution of the matter; rather, it
    acknowledged that "if similar matters come up in the future, we may
    not    be      able   to   resolve   them   without   facing   significant
    consequences."        These are not the actions of a company bent on
    deceiving investors as to their future earnings prospects.10
    Under plaintiffs' theory of the case, Abiomed should have
    affirmatively admitted widespread wrongdoing rather than stating
    that the outcome of its regulatory back-and-forth with the FDA was
    uncertain.       That would be a perverse result; such an admission
    would have been misleading, since the off-label marketing issues
    had the potential to be resolved with no adverse action from the
    FDA.        We made a similar point in In re Boston Scientific Corp.
    Securities Litigation, 
    686 F.3d 21
    (1st Cir. 2012), where we noted
    that "a company may behave 'irresponsibly' if it issues an ominous
    warning about an uncertain risk that 'had not yet been adequately
    investigated.'"        
    Id. at 31
    (quoting N.J. Carpenters Pension &
    Annuity Funds v. Biogen IDEC Inc., 
    537 F.3d 35
    , 58 (1st Cir.
    10
    This court reached a similar conclusion in the parallel
    derivative action brought by Abiomed shareholders against Abiomed
    and its directors. See 
    Bryceland, 557 F. App'x at 5
    (holding that
    the shareholders' complaint did not "allege facts showing that the
    directors hid from investors the trouble that th[e alleged off-
    label] marketing had created; indeed, as the reproduced sections of
    Abiomed's SEC filings make clear, the company was not shy in
    disclosing its exposure to liability").
    -32-
    2008)).        There must be some room for give and take between a
    regulated entity and its regulator.11
    2.       Statements About Abiomed's Policy with Respect to
    Off-Label Marketing and its Interaction with the
    FDA
    Again, we assume arguendo that "Abiomed had an actual
    policy    or    practice    of   off-label       marketing,      while     its   public
    statements       were    that    its    policy    was    to    refrain     from    such
    marketing," Simon, 
    2014 WL 1413638
    , at *17, and that defendants
    stated that they were cooperating with the FDA when they were not
    doing so.       But we conclude that plaintiffs have failed to allege
    that defendants made these statements with the requisite scienter.
    First, there are Abiomed's substantial disclosures about
    its correspondence with the FDA.                  As said, these disclosures
    undercut any inference of scienter. Plaintiffs' brief glosses over
    these disclosures in an effort to make the case for scienter more
    compelling.         According to the brief, Abiomed said that it did not
    engage in off-label marketing and that all of the FDA's concerns
    "had been resolved." But this characterization is inaccurate, both
    as to the complaint and as to what the actual statements were.                     The
    complaint actually says that Abiomed stated its policy was to
    "refrain       from   statements       that   could     be    considered    off-label
    11
    That the company did not disclose the receipt of the
    Untitled Letter from the FDA is not proof of scienter. The FDA
    gradates its levels of inquiry and does not itself make Untitled
    Letters public.
    -33-
    promotion," but that the FDA could disagree with Abiomed's view on
    that question; and that while it "believe[d]" the issue had been
    resolved, it could come up again in the future and could entail
    "significant consequences." In resolving this appeal, we focus, as
    did the district court, on the allegations of the complaint, not on
    plaintiffs' characterization of those allegations.
    Other evidence supports Abiomed's argument that it was
    not involved in a scheme to defraud investors but rather in finding
    a solution amenable to the FDA while meeting its need to market its
    products.     It was Abiomed which asked for meetings with the FDA.
    And an agreement was reached.          The FDA in fact sent a close-out
    letter in February 2013 saying that Abiomed's corrective actions
    undertaken    in   response    to    the    June    2011   Warning     Letter   had
    adequately    addressed   the    FDA's      concerns.      This   significantly
    undercuts any inference that defendants purposefully or recklessly
    misled investors about the extent of Abiomed's cooperation with the
    FDA.
    Scienter is not established because there were statements
    from confidential witnesses that Abiomed management was in fact
    intentionally violating FDA regulations. These witnesses said that
    Abiomed   senior    management       knew    that    Abiomed     was   improperly
    marketing    the   Impella    2.5,    did    not    take   the   FDA's   warnings
    -34-
    seriously, and "blew off" the concerns of lower-level employees.12
    The   confidential   witnesses   are   not   described   with   sufficient
    particularity for their statements to give rise to the requisite
    "strong inference" of scienter on the part of Abiomed and its
    management.   As the district court noted, none of the witnesses
    "were in senior management positions, and they appear to have had
    relatively little ongoing contact with senior management."          Simon,
    
    2014 WL 1413638
    , at *14.    CW2, CW3, CW4, and CW6 did not even work
    at Abiomed during the Class Period and so would not have had
    firsthand knowledge of the state of mind of Abiomed's management
    during that period.     And CW1, CW5, and CW7, who stated that the
    training and marketing materials Abiomed provided were "improper"
    under FDA regulations, did not identify the time period to which
    most of their statements related. Cf. Biogen 
    IDEC, 537 F.3d at 52
    -
    12
    That the witnesses were confidential did not disqualify
    them.
    [W]here   plaintiffs   rely  on   confidential
    personal sources but also on other facts, they
    need not name their sources as long as the
    latter facts provide an adequate basis for
    believing that the defendants' statements were
    false.   Moreover, even if personal sources
    must be identified, there is no requirement
    that they be named, provided they are
    described in the complaint with sufficient
    particularity to support the probability that
    a person in the position occupied by the
    source would possess the information alleged.
    Mesko v. Cabletron Sys., Inc. (In re Cabletron Sys., Inc.), 
    311 F.3d 11
    , 29 (1st Cir. 2002) (alteration in original) (quoting Novak
    v. Kasaks, 
    216 F.3d 300
    , 314 (2d Cir. 2000)).
    -35-
    53 (discounting probative value of observations by confidential
    sources in part because the sources did not disclose when those
    observations were made).   The CWs' statements are also undermined
    by the fact that the FDA eventually closed out its investigation of
    Abiomed without taking any action adverse to the company.
    More fundamentally, even if the CWs' statements plausibly
    suggest that Abiomed was acting improperly, they do not show that
    defendants' statements about company policy and the FDA's inquiries
    were made with conscious intent to defraud or recklessly.    As we
    said in Waters Corp., "[t]he key question . . . is not whether
    defendants had knowledge of certain undisclosed facts, but rather
    whether defendants knew or should have known that their failure to
    disclose those facts 'present[ed] a danger of misleading buyers or
    
    sellers.'" 632 F.3d at 758
    (third alteration in original) (emphasis
    added) (citation omitted) (quoting 
    Greebel, 194 F.3d at 198
    ).   For
    example, CW7's statements, far from suggesting an intent to defraud
    investors, suggest instead that Abiomed was aggressively marketing
    the Impella 2.5 "every which way" in order to sell more units.13
    3.     Insider Trading Allegations
    The plaintiffs' allegations of insider trading do not
    alter our conclusion as to lack of scienter.        "Depending on
    13
    At oral argument, plaintiffs' counsel disavowed any
    reliance on the argument, based on an efficient market hypothesis,
    that any statements regarding the Impella 2.5 aimed at potential
    buyers of the device were also effectively aimed at investors in
    Abiomed.
    -36-
    context, allegations of insider trading may offer some support for
    inferences of scienter."     Waters 
    Corp., 632 F.3d at 760
    .   "'The
    vitality of the inference to be drawn depends on the facts, and can
    range from marginal to strong.'" 
    Id. (quoting Greebel,
    194 F.3d at
    197–98).   For stock sales by corporate officials to bolster an
    inference of scienter, the trading must be, "[a]t a minimum, . . .
    unusual, well beyond the normal patterns of trading by those
    defendants."    
    Id. at 761
    (quoting 
    Greebel, 194 F.3d at 198
    )
    (internal quotation marks omitted); accord 
    Greebel, 194 F.3d at 206-07
    (sales must be "out of the ordinary or suspicious").
    Here, the trading cited in the complaint was neither
    unusual nor suspicious.    Minogue increased his holdings of Abiomed
    stock by 9.2% during the Class Period, which negates any inference
    that he had a motive to artificially inflate Abiomed's stock during
    that period.   Cf. ACA 
    Fin., 512 F.3d at 66-67
    (declining to find a
    strong inference of scienter in part because defendants would not
    have been personally enriched by defrauding investors). Bowen made
    his first sales of Abiomed stock (totaling 6.5% of his holdings)
    between January 2010 and the end of the Class Period.     But those
    sales are hardly suspicious given that he had just joined the
    company in December 2008 and first became eligible to trade in
    December 2009.14   Plaintiffs list the amounts of stock sales made
    14
    We need not address the parties arguments concerning
    defendants' 10b5-1 trading plans because plaintiffs' arguments
    concerning the purported insider trading fail even without
    -37-
    by other senior executives during that period, but they do not
    provide sufficient evidence about those trades to allow the court
    to draw from them a strong inference of scienter. For example, the
    complaint is silent as to the percentage of holdings sold or the
    circumstances surrounding the trades.             It is also unclear whether
    all of the cited executives would have had detailed knowledge about
    Abiomed's marketing practices.           Cf. Waters 
    Corp., 632 F.3d at 762
    n.5 (finding that allegations regarding non-defendant insider sales
    were not probative because the complaint listed "only bare facts
    about the shares sold").
    4.         Conclusion
    Abiomed's promotional and marketing activities for its
    core product might have been a risky course in terms of its
    likelihood        of   prompting     sanctions    from      the    FDA.       Still,
    "[a]llegations of corporate mismanagement are not actionable under
    Rule 10b-5.       Nor are allegations of mere negligence."                
    Id. at 760
    (citations omitted); see also 
    Greebel, 194 F.3d at 188
    (noting that
    the mens rea required for securities fraud "does not include
    ordinary negligence, but is closer to being a lesser form of
    intent"). As the district court correctly noted, "this case is not
    about   whether        or   not   defendants     violated    the    FDCA     or   FDA
    regulations.           It   concerns   alleged    violations       of     securities
    considering those plans.
    -38-
    law . . . ."   Simon, 
    2014 WL 1413638
    , at *14.        Plaintiffs' Rule
    10b-5 claim fails.
    IV.    Section 20(a) Claim
    Section 20(a) of the Securities Exchange Act imposes
    joint and several liability on persons in control of entities that
    violate securities laws.        15 U.S.C. § 78t(a).   A section 20(a)
    claim is derivative of an underlying violation of the securities
    laws.   ACA 
    Fin., 512 F.3d at 67-68
    .       Because the district court
    correctly dismissed plaintiffs' claims under Rule 10b-5, it also
    correctly dismissed plaintiffs' section 20(a) claims.       See 
    id. V. Leave
    To Amend
    On a hopeless quest, plaintiffs argue we should remand to
    allow them amend the complaint.      No proper request was made to the
    district court, only a mention in a footnote in their opposition to
    dismissal. See Joblove v. Barr Labs, Inc. (In re Tamoxifen Citrate
    Antitrust Litig.), 
    466 F.3d 1
    87, 220 (2d Cir. 2006) ("It is within
    the court's discretion to deny leave to amend implicitly by not
    addressing the request when leave is requested informally in a
    brief filed in opposition to a motion to dismiss."), abrogated on
    other grounds by F.T.C. v. Actavis, Inc., 
    133 S. Ct. 2223
    (2013);
    Calderon v. Kan. Dep't of Soc. & Rehab. Servs., 
    181 F.3d 1180
    ,
    1185-87 (10th Cir. 1999) (noting with approval an earlier holding
    that a district court need not grant leave to amend if plaintiffs
    make a "bare request in their response to a motion to dismiss").
    -39-
    In any event, it is far too late; plaintiffs were put on
    notice of the deficiencies in the complaint by the motion to
    dismiss.   If they had something relevant to add, they should have
    moved to add it then.    See ACA 
    Fin., 512 F.3d at 57
    (rejecting
    plaintiffs' argument that the district court erred in denying them
    leave to amend because "[p]laintiffs took no action to add new
    allegations" in response to defendants' motion to dismiss "even
    though they knew what they would add if they amended," and noting
    that   allowing   such   a     practice    would   "lead   to    delays,
    inefficiencies, and wasted work"). And even now there is no
    suggestion that amendment would be anything other than futile.
    See, e.g., HSBC Realty Credit Corp. (USA) v. O'Neill, 
    745 F.3d 564
    ,
    578 (1st Cir. 2014); Braunstein v. McCabe, 
    571 F.3d 108
    , 127 (1st
    Cir. 2009); Universal Commc'n Sys., Inc. v. Lycos, Inc., 
    478 F.3d 413
    , 418 (1st Cir. 2007).     We wish to discourage this practice of
    seeking leave to amend after the case has been dismissed.
    VI.   Conclusion
    We affirm the judgment of the district court.        Costs are
    awarded to Abiomed.
    -40-