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Nathan Fountain

Director at Acumen Pharmaceuticals
Board

About Nathan Fountain, M.D.

Independent director (Class III) since June 2021; age 62; term expires at the 2027 Annual Meeting. Professor of Neurology at the University of Virginia; director of the F.E. Dreifuss Comprehensive Epilepsy Program since 1998; CEO and director of Hexokine Therapeutics, Inc. since November 2021. Education: M.D. and B.S. from the University of Iowa. Board cites neurology expertise as core qualification for service .

Past Roles

OrganizationRoleTenureCommittees/Impact
FDA Peripheral & CNS Drugs Advisory CommitteeMember; ChairNov 2010–Jun 2021; Chair Feb 2018–Jun 2021Led advisory review work for CNS drug approvals
National Association of Epilepsy CentersPresident; DirectorPrior leadership of national clinical network
Epilepsy Foundation of VirginiaProfessional Advisory Board ChairSince 2009Ongoing governance and clinical guidance

External Roles

OrganizationRoleTenureNotes
University of Virginia School of MedicineProfessor of NeurologyCurrentAcademic leadership in epilepsy
F.E. Dreifuss Comprehensive Epilepsy Program (UVA)Program DirectorSince 1998Clinical program leadership
Hexokine Therapeutics, Inc.CEO and DirectorSince Nov 2021Biotech operating role
Shackelford Pharma Inc.Advisory Board ChairCurrentDrug development advisory role
Theta Neurotech Inc.Scientific Board MemberCurrentScientific oversight
Epilepsy Foundation’s Research Roundtable for EpilepsyFounding Co-ChairCurrentResearch convening leadership

Board Governance

  • Independence: Affirmatively determined independent under Nasdaq standards .
  • Committee assignments: Nominating & Corporate Governance Committee member; not chair (committee chaired by Dr. Laura Stoppel) .
  • Board leadership: Independent Board Chair (Sean Stalfort) with authority to preside over independent director sessions .
  • Attendance and engagement: Board met six times in FY2024; each director attended at least 75% of Board and committee meetings applicable to them; all directors attended the 2024 Annual Meeting .
  • Committee activity: FY2024 meetings—Audit (4), Compensation (4), Nominating & Corporate Governance (3) .

Fixed Compensation (Director)

ComponentAmountPeriod/Effective DateNotes
Cash fees earned (Dr. Fountain)$41,917FY2024Total cash fees for Board/committee service
Annual Board retainer (policy)$40,000Increased effective Jun 1, 2024Paid quarterly in arrears
Nominating & Corporate Governance—member retainer (policy)$4,000OngoingChair receives $8,000; members $4,000
Additional retainers (policy)$30,000OngoingBoard Chair and Lead Independent Director each receive $30,000 (if applicable)

Performance Compensation (Director)

Equity ComponentUnits/ValueVestingGrant/Policy Detail
Option awards (Dr. Fountain)$49,855 grant-date FVPer award agreementFY2024 director option award valuation
Outstanding options (Dr. Fountain)109,000 sharesVests per award schedulesAggregate outstanding options as of Dec 31, 2024
Initial director option grant (policy)50,000 options36 equal monthly installmentsExercise price = closing price on grant date
Annual director option grant (policy, 2024)25,000 optionsVests by 1-year anniversary or next AGMExercise price = closing price on grant date
Annual director equity (policy, 2025 amendment)19,500 options + 12,800 RSUsOptions: annual; RSUs: per plan termsApproved Mar 2025
Change-in-control acceleration (director)All outstanding director options vestAt change in controlSubject to continuous service through transaction date

No performance-based equity metrics are disclosed for non-employee directors; awards are time-based under the Non-Employee Director Compensation Policy .

Other Directorships & Interlocks

  • Public company boards: None disclosed for Dr. Fountain beyond ABOS .
  • Network roles: Advisory/board positions at Shackelford Pharma Inc. and Theta Neurotech Inc. (private/undisclosed status in proxy) .
  • Large shareholders on Board: RA Capital partner (Dr. Laura Stoppel) serves on ABOS Board; not an interlock with Dr. Fountain’s roles; ownership noted separately in proxy .

Expertise & Qualifications

  • Clinical and regulatory expertise: Extensive neurology focus; leadership in epilepsy care; chaired FDA CNS advisory committee (2018–2021) .
  • Industry engagement: CEO experience in biotech; advisory roles across neurotech/drug development .
  • Board qualification statement: Board cites neurology experience as rationale for nomination/continued service .

Equity Ownership

CategoryShares/Units% of OutstandingNotes
Common shares owned directly6,250*Direct ownership
Options exercisable within 60 days84,000*Vested/exercisable options
Total beneficial ownership90,250*Aggregate beneficial ownership
Aggregate outstanding options (Dec 31, 2024)109,000As per director options table
  • Insider trading policy: Prohibits short sales, transactions in puts/calls, hedging, margin accounts or other speculative transactions in company stock, supporting alignment and risk controls .
  • Pledging/hedging disclosure: No pledging disclosed; policy restricts hedging/speculative transactions .

Governance Assessment

  • Strengths

    • Clear independence determination; no related-party transactions disclosed for period Jan 1, 2023 through proxy date .
    • Relevant clinical/regulatory expertise and prior FDA committee chair experience, valuable for biotech governance and risk oversight .
    • Active committee service on Nominating & Corporate Governance; Board chaired by an independent director; structured committee oversight .
    • Attendance threshold met (≥75%) and Annual Meeting attendance, indicating engagement .
    • Director equity awards and insider trading policy foster alignment while discouraging speculative trading .
  • Potential Risks/RED FLAGS

    • External operating role (CEO/Director at Hexokine Therapeutics) presents theoretical conflict risk if transactional relationships arise with ABOS; however, proxy reports no related-party transactions during the covered period .
    • Limited disclosure of director stock ownership guidelines (none referenced in proxy); alignment relies on option/RSU grants and policy prohibitions rather than formal ownership requirements .
  • Implications

    • Governance profile supports investor confidence: independence, domain expertise, and committee participation are aligned with best practices .
    • Monitor any future business dealings between ABOS and entities affiliated with Dr. Fountain to preempt conflicts; Audit Committee oversees related-party reviews and maintains formal policy .