Sign in

William N. Thorndike, Jr.

Co-Chairman of the Board at Perimeter Solutions
Board

About William N. Thorndike, Jr.

Co‑Chairman of the Board at Perimeter Solutions, Inc. since November 2021; age 61. Founder and Managing Partner of The Cromwell Harbor Partnership; previously founded Housatonic Partners, and earlier worked at T. Rowe Price and Walker & Company (where he served on the Board). Currently Chairman of CNX Resources Corporation and director of several private companies (Banyan Software, QMC Telecom, Carillon Assisted Living). Education: A.B. in English and American Literature (Harvard University) and MBA (Stanford University). Author of “The Outsiders” and co‑host of the “50X” podcast .

Past Roles

OrganizationRoleTenureCommittees/Impact
The Cromwell Harbor PartnershipFounder, Managing PartnerNot disclosedPrivate investment with long holding periods
Housatonic PartnersFounderNot disclosedLed middle‑market PE investing
T. Rowe Price AssociatesInvestment professionalNot disclosedAsset management experience
Walker & CompanyBoard DirectorNot disclosedPublishing; governance experience

External Roles

OrganizationRoleTenureCommittees/Impact
CNX Resources CorporationChairman of the BoardCurrentBoard leadership
Banyan SoftwareDirectorCurrentPrivate company governance
QMC TelecomDirectorCurrentPrivate company governance
Carillon Assisted LivingDirectorCurrentPrivate company governance

Board Governance

AttributeDetail
Board roleCo‑Chairman of the Board; member, Executive Committee (not Chair)
Committee assignmentsExecutive Committee only; not on Audit, Compensation, or Nominating & Corporate Governance
Independence statusNot independent under NYSE and SEC rules (with Howley and Khouri)
AttendanceBoard held 6 meetings in 2024; each incumbent director attended ≥75% of Board and assigned committee meetings
Executive sessions frequencyNot disclosed
Board leadershipCEO role separated from Co‑Chairmen; Co‑Chairmen set agendas and provide strategic guidance

Fixed Compensation

Component2024 Amount/TermsNotes
Director cash retainer$0Thorndike does not receive director compensation due to affiliation with EverArc Founder Entity
Committee chair fees$0Not a committee chair
Fixed Annual Advisory Amount (Founder Advisory Agreement)2,357,061 PRM shares for 2024; ≈$30.3M (based on 2024 Average Price)Paid to EverArc Founders, LLC. Ownership interests: Thorndike 33% (with Howley 33%, Khouri 25%, Raj 7%, Britt Cool 2%)

Note: Director fees/options apply only to independent directors. Thorndike’s compensation exposure is via the Founder Advisory Agreement, not PRM’s standard director program .

Performance Compensation

Metric/MechanismTerms2024 Outcome
Variable Annual Advisory Amount (Founder Advisory Agreement)Payable only if PRM average share price ≥$10 for 10 consecutive trading days; amount equals 18% × increase in “Payment Price” × 157,137,410 shares; subsequent years pay 18% on incremental increases over prior Payment Price × same share count No variable advisory fee paid for 2024
Termination Payment (Founder Advisory Agreement)If terminated due to sale/liquidation or delisting, cash payment equals remaining Fixed and Variable Annual Advisory Amounts for all remaining years; Payment Price escalates 15% annually for calculation; immediate due and payable Not triggered in 2024

Equity‑based director options: Not applicable to Thorndike (only independent directors receive 35,000 annual options vesting over 5 years subject to performance) .

Other Directorships & Interlocks

  • Current public company: CNX Resources Corporation (Chairman) .
  • Private companies: Banyan Software, QMC Telecom, Carillon Assisted Living (director) .
  • PRM interlock: Member and 33% owner of EverArc Founders, LLC, which receives PRM advisory fees; other PRM directors are co‑owners (Howley, Khouri, Raj, Britt Cool) .

Expertise & Qualifications

  • Finance and investment expertise; extensive director experience across >50 companies .
  • Board leadership experience (Chairman at CNX Resources; Co‑Chairman at PRM) .
  • Strategic capital allocation focus; author of governance‑relevant business book (“The Outsiders”) .

Equity Ownership

HolderShares Beneficially Owned% of OutstandingNotes
William N. Thorndike, Jr.3,530,0822.4%As of March 31, 2025; PRM had 148,775,583 shares outstanding
  • Pledging/hedging: Company prohibits hedging, short sales, and pledging by directors/officers; all directors and executive officers are in compliance .

Governance Assessment

  • Strengths

    • Clear separation of CEO and Co‑Chairman roles; Thorndike contributes strategic oversight via Executive Committee .
    • Robust committee independence and qualifications on Audit/Comp/Nominating (though Thorndike is not a member) .
    • Strong shareholder support for Say‑on‑Pay in 2024 (~91% approval), indicating general investor confidence in compensation governance .
  • Concerns/RED FLAGS

    • Related‑party exposure: Founder Advisory Agreement pays substantial fixed share issuance (2,357,061 shares in 2024; ≈$30.3M) to entity controlled by PRM directors, including Thorndike (33% interest), with potentially large termination payments and price‑escalation features—risk of perceived conflicts and dilution .
    • Independence: Thorndike is not independent under NYSE/SEC rules—limits committee eligibility and may raise oversight concerns in aggregate with other non‑independent leaders .
    • Historical control weaknesses: 2022 material weaknesses (performance‑based stock accounting; business combinations/goodwill; cash flow presentation) remediated by 2023—improvement noted, but prior issues are a governance consideration .
  • Additional observations

    • Attendance and engagement: ≥75% attendance threshold met by all directors in 2024; Board held six meetings (virtual annual meeting logistics noted) .
    • Compensation Committee practices: Fully independent; retains FW Cook; no interlocks or consultant conflicts disclosed .

Bottom line: Thorndike brings deep investment and board leadership expertise and meaningful ownership, but his non‑independent status and the Founder Advisory Agreement’s structure and magnitude present ongoing conflict/dilution optics that investors should monitor closely, including any changes to advisory fee mechanics or termination triggers .