William Peterffy - Director | Interactive Brokers Group (IBKR) Executive Profile & Compensation

About William Peterffy

William Peterffy (age 35) has served on Interactive Brokers Group, Inc.’s Board since April 2020. He is Chair of the Investment Committee of the Peterffy Foundation, CEO/founder of One Small Planet, and a trustee of the Collective Heritage Institute (Bioneers), with prior experience as an investment analyst in the hedge fund industry and a focus on sustainability/ESG issues . He is the son of Thomas Peterffy, IBKR’s Founder and Chairman .

Past Roles

Organization	Role	Tenure	Committees/Impact
Hedge fund industry	Investment Analyst	Not disclosed	Investment research experience

External Roles

Organization	Role	Tenure	Committees/Impact
Peterffy Foundation	Chair, Investment Committee	Not disclosed	Oversees foundation investment portfolio
One Small Planet	Chief Executive Officer & Founder	Not disclosed	Mission-led operator; sustainability focus
Collective Heritage Institute (Bioneers)	Trustee	Not disclosed	Focus on sustainability initiatives

Board Governance

Independence: Not independent due to family relationship (son of Chairman Thomas Peterffy). IBKR is a “controlled company” under Nasdaq rules and is not required to maintain a majority of independent directors or fully independent compensation and nominating committees .
Committee assignments: None (no Audit, Compensation, or Nominating & Corporate Governance seats) .
Attendance: He was the only director below the 75% attendance threshold in 2024; “with the exception of Mr. William Peterffy, each of our then serving directors attended at least 75% of the meetings of our Board and the committees… in fiscal year 2024.” This is a red flag on engagement .
Lead Independent Director: Dr. Lawrence Harris (also Audit Chair and audit committee financial expert) .
Controlled voting structure: Class B shares (all held by IBG Holdings LLC controlled by Thomas Peterffy) represented ~74.2% of voting power as of the 2025 record date; Class B votes on an as-converted basis (no super-voting) but confers control over director elections .
Hedging/pledging policy: Directors are prohibited from hedging, shorting, or pledging IBKR stock (alignment positive) .

Fixed Compensation (Director FY2024)

Component	Amount	Notes
Annual cash fees	$162,500	Board retainer received in 2024
Equity grant	$25,000	Annual stock award granted 12/31/2024; vests immediately
Dividend equivalents	$559	Paid on unvested director stock awards under plan terms
Total	$188,059	Sum of above
Policy reference	—	Standard annual retainer $150,000; committee chair add’l $25,000; one-time $75,000 new-director grant vests straight-line over 5 years

Performance Compensation (Directors)

Pay Element	Performance Metric(s)	Vesting/Terms	Notes
Annual director equity	None disclosed for directors	Annual $25,000 grant vests immediately	No performance-conditions disclosed for director equity
New-director one-time equity	None disclosed for directors	$75,000, straight-line vest over 5 years	Applies in year of appointment

IBKR’s named executive officers’ incentives are majority equity and qualitative-performance based, but the proxy does not disclose any performance metrics for non-employee director pay; director equity awards are time-based per policy .

Other Directorships & Interlocks

Category	Detail
Current public company boards	None disclosed for William Peterffy
Private/non-profit boards	Peterffy Foundation (Investment Committee Chair); Bioneers (Trustee)
Potential interlocks	Family relationship with Chairman (control person) creates perceived influence; no disclosed public-company interlocks with competitors/customers/suppliers

Expertise & Qualifications

ESG/sustainability orientation (Bioneers trustee; focus area cited in bio) .
Investment oversight and capital allocation (chairs foundation investment committee; prior hedge fund analyst) .
Board Skills Matrix highlights sustainability/governance and strategic planning among board competencies (matrix includes director skill coverage) .

Equity Ownership

Item	Amount/Status
Class A shares beneficially owned (3/3/2025)	2,090 shares; less than 0.5% of outstanding Class A
Class B ownership	None (Class B held entirely by IBG Holdings LLC)
Unvested director awards	Not itemized for directors; receipt of $559 dividend equivalents indicates unvested director stock units outstanding in 2024
Hedging/pledging	Prohibited by policy (no hedging, shorting, or pledging of IBKR stock)

Governance Assessment

Red flags
- Below-threshold attendance: Only director under 75% attendance in 2024; signals engagement risk and can weigh on board effectiveness and investor confidence .
- Non-independence with controlling shareholder: Family relationship to Chairman within a controlled company structure (74.2% voting power) heightens perceived conflicts and limits minority shareholder influence on director elections and oversight .
- No committee roles: Lack of Audit/Comp/NCG committee seats reduces direct influence on key governance levers (audit oversight, pay, nominations) .
Mitigating/positive factors
- ESG/investment skill set may add perspective on sustainability and long-term capital allocation .
- Director compensation is modest and largely fixed (cash retainer) with small equity exposure; equity awards are subject to plan cancellation provisions and dividend equivalents, and hedging/pledging is prohibited—alignment-positive, though direct share ownership is small .
Implications for investors
- Expect limited independent challenge from this director given family ties, absence from committees, and low 2024 attendance; counterbalance relies on the Lead Independent Director/Audit Chair and other independent directors .
- Controlled voting structure effectively assures election outcomes; engagement should focus on independent directors and committee leadership to strengthen oversight .