Velarion · Company Intelligence
Compensation Brief
Fiscal year 2025 · Filings through 2026-06-04

Inhibrx Biosciences, Inc. (INBX)

Fiscal year 2025 executive and director compensation, incentive-plan design, equity activity, and governance — every figure in this brief is traceable to its exact location in the company’s SEC filing — the document, the section, the page, and the table, linked directly.

$2,892,473
Mark Lappe total, FY2025
CEO pay percentile vs peers
CEO-to-median pay ratio
Say-on-pay support, latest vote
Companies that benchmark against INBX
7 companies name INBX as a compensation peer

Each company listed discloses INBX in its own benchmarking peer group, as disclosed in each company's most recent proxy statement within the last two proxy seasons. Two companies are therefore absent by design: one that named INBX in an earlier year and no longer does, and one whose own most recent disclosure is older than the last two seasons.

01

Summary Compensation Table — fiscal year 2025

Named executive officerSalaryBonusStock awardsOption awardsNon-equity incentivePension / NQDCAll otherTotal
Mark Lappe$695,250$1,700,000$0$0$479,723$0$17,500$2,892,473
Chief Executive Officer and Chairman of the Board of Directors
David Matly589,17000524,285304,985017,5001,435,940
President
Kelly Deck493,48500157,286255,425017,500923,696
Chief Financial Officer

A dash means the company reported no figure in that column; 0 means it reported zero. Figures are as printed in the filing, without adjustment.

Three-year trend — total compensation per named executive

Named executive officerFY2025 totalFY2024 totalFY2023 totalΔ FY20242025
Mark Lappe$2,892,473$4,691,783−1,799,310
David Matly1,435,940
Kelly Deck923,6964,267,254−3,343,558

Prior-year totals as disclosed in the corresponding proxy; deltas are computed values with the derivation shown in the register.

02

Equity transactions since the proxy statement was filed

Every insider equity transaction reported on Form 4 after the 2025 proxy statement — acquisitions, dispositions, exercises, and withholdings — and therefore not reflected in any table in that document.

InsiderRoleTransaction dateCodeSharesPriceValueSecuritySource
David MatlyPresident2026-04-24A50,000$0$0Derivative, Class A CommonForm 4 ↗
Kristiina Vuori MDDirector2026-06-03A15,00000Derivative, Class A CommonForm 4 ↗
Jon Faiz KayyemDirector2026-06-03A15,00000Derivative, Class A CommonForm 4 ↗
Douglas G. ForsythDirector2026-06-03A15,00000Derivative, Class A CommonForm 4 ↗
Kimberly ManhardDirector2026-06-03A15,00000Derivative, Class A CommonForm 4 ↗

Transaction codes per Form 4: A acquisition · S open-market sale · F tax withholding · M option exercise · G gift. Value = shares × price as reported. Dividend-equivalent and fractional-share accrual rows (derivative Class A, under $10,000 and under 2,000 shares) are aggregated per date; every row appears in full below.

03

Grants of plan-based awards — fiscal year 2025

ExecutiveAwardGrant dateThresholdTargetGrantedMaximumGrant-date fair value
David MatlyOPTION$524,285
Kelly DeckOPTION157,286
03b

Vehicle mix — grant-date fair value by award type

Named executive officerTime-vested (RSU)Performance-vested (PSU)Options / SARs% performance-vested
David Matly$0$0$524,2850.0%
Kelly Deck00157,2860.0%

% performance-vested = PSU grant-date fair value ÷ (RSU + PSU + Options), a computed value with the derivation shown in the register.

04

Outstanding equity awards at fiscal year-end 2025

ExecutiveAwardShares unvestedExercise priceMarket value unvested
David MatlyOption50,00014.05
David MatlyOption105,72915.86
David MatlyOption3,500,85516.06
Mark LappeOption181,25015.86
Kelly DeckOption105,72915.86
Kelly DeckOption15,00014.05
05

Incentive-plan design — the Compensation Discussion & Analysis

equity grants provide our executive officers with a strong link to our long-term performance, create an ownership opportunity, and help to align the interests of our executive officers and our stockholders

CEO STI target (% of salary)60%
CEO LTI target (% of salary)
Independent consultant
Clawback policytrue
Anti-hedgingtrue
Anti-pledgingfalse
07

CEO pay ratio

Ratio (CEO : median employee)
CEO total compensation
Median employee compensation
08

Director compensation — fiscal year 2025

DirectorCash feesStock awardsOption awardsNon-equity incentiveAll otherTotal
Douglas G. ForsythIndependent · Audit (Chair) · Compensation · Nominating/Governance (Chair)$63,000$0$139,685$0$0$202,685
Jon Faiz Kayyem, Ph.DIndependent · Audit · Compensation (Chair)52,5000139,68500192,185
Kristiina Vuori, M.D., Ph.DIndependent · Audit · Nominating/Governance46,5000139,68500186,185
Kimberly ManhardIndependent · Compensation · Nominating/Governance44,0000139,68500183,685
Mark P. LappeEmployee director · Board Chair00000
09

Board fee structure and ownership guideline

Annual cash retainer$35,000
Annual equity retainer$139,685
Per board meeting fee
Committee chair fees (audit / comp / nom-gov)15,000 / 10,000 / 8,000
Stock ownership guideline
09b

Total cost of the board

ComponentFY2025
Cash retainers and fees$206,000
Equity awards (grant-date value)$0
All other compensation$0
Total cost of the board$206,000

Computed as the sum of the director compensation table rows above; inputs and formula shown in the register.

10b

Chief executive pay against the peer group

Most recent fiscal-year chief executive compensation at each disclosed peer, taken from that company's own proxy statement.

RankCompanyFYChief executiveSalaryStock awardsOption awardsNon-equity incentiveTotal
1Inhibrx Biosciences, Inc.2025Mark Lappe$695,250$0$0$479,723$2,892,473

Each peer's compensation is from its most recently filed proxy; fiscal years differ by company. Each peer's figures come from its own filings; the subject company is highlighted. Peers whose chief executive compensation is outside our coverage universe are stated as such, never left blank.

FAQ

Frequently asked questions

Who was the highest-paid executive at Inhibrx Biosciences, Inc. in fiscal 2025?
As disclosed, Mark Lappe served as the Chief Executive Officer and Chairman of the Board of Directors with total compensation of $2,892,473.
How does Inhibrx Biosciences, Inc.'s chief executive pay compare to its disclosed peer group?
The filing shows the CEO pay percentile of disclosed peers is not disclosed.
What is Inhibrx Biosciences, Inc.'s CEO-to-median employee pay ratio?
The CEO-to-median employee pay ratio is not disclosed in this extract.
How did shareholders vote on Inhibrx Biosciences, Inc.'s executive compensation?
The Say on Pay support from the latest vote is not disclosed in this extract.
How much does Inhibrx Biosciences, Inc. spend in total on board compensation for fiscal 2025?
The total board compensation for fiscal 2025 was $206,000.

Answers are drawn only from the figures disclosed in this brief and cited to their location in the source filing. Where a figure required for an answer is not disclosed, that is stated rather than estimated.

11

Source register

Each figure's location is given both for the eye (section · page · table · row · column) and for a script (table/row/column index and exact character span in the filed document). Any figure can be independently confirmed against the source.

#SupportsDocumentFiledAccessionLocation in document
1Section 01, Mark LappeDEF 14A2026-04-230002007919-26-000014Section “Summary Compensation Table” · page 16. As printed: 2,892,473. Filing ↗machine: span 234894–234903
2Section 01, David MatlyDEF 14A2026-04-230002007919-26-000014Section “Summary Compensation Table” · page 16. As printed: 1,435,940. Filing ↗machine: span 252124–252133
3Section 01, Kelly DeckDEF 14A2026-04-230002007919-26-000014Section “Summary Compensation Table” · page 16. As printed: 923,696. Filing ↗machine: span 243449–243456
4Section 03, David Matly OPTIONDEF 14A2026-04-230002007919-26-000014Section “Grants of Plan-Based Awards” · grants of plan-based awards table. Filing ↗machine: t15 · r6 · c13 · span 250289–250296
5Section 03, Kelly Deck OPTIONDEF 14A2026-04-230002007919-26-000014Section “Grants of Plan-Based Awards” · grants of plan-based awards table. Filing ↗machine: t15 · r4 · c13 · span 241614–241621
6Section 07, pay ratio10-K2026-03-190002007919-26-000006Section “CEO Pay Ratio”. As printed: —. Filing ↗
7Section 08, Douglas G. ForsythDEF 14A2026-04-230002007919-26-000014Section “Director Compensation”. As printed: 202,685. Filing ↗machine: t12 · r2 · c15 · span 195699–195706
8Section 08, Jon Faiz Kayyem, Ph.DDEF 14A2026-04-230002007919-26-000014Section “Director Compensation”. As printed: 192,185. Filing ↗machine: t12 · r3 · c15 · span 198527–198534
9Section 08, Kristiina Vuori, M.D., Ph.DDEF 14A2026-04-230002007919-26-000014Section “Director Compensation”. As printed: 186,185. Filing ↗machine: t12 · r5 · c15 · span 204127–204134
10Section 08, Kimberly ManhardDEF 14A2026-04-230002007919-26-000014Section “Director Compensation”. As printed: 183,685. Filing ↗machine: t12 · r4 · c15 · span 201321–201328
11Section 08, Mark P. LappeDEF 14A2026-04-230002007919-26-000014Section “Director Compensation”. As printed: 0. Filing ↗
12Section 02, David Matly 2026-04-24Form 42026-04-270002062665-26-000002Insider equity transaction reported since the proxy statement. Filing ↗
13Section 02, Kristiina Vuori MD 2026-06-03Form 42026-06-040001612627-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
14Section 02, Jon Faiz Kayyem 2026-06-03Form 42026-06-040001366268-26-000002Insider equity transaction reported since the proxy statement. Filing ↗
15Section 02, Douglas G. Forsyth 2026-06-03Form 42026-06-040001240801-26-000002Insider equity transaction reported since the proxy statement. Filing ↗
16Section 02, Kimberly Manhard 2026-06-03Form 42026-06-040001202094-26-000002Insider equity transaction reported since the proxy statement. Filing ↗
17Section 01 trend, Δ column (computed)ComputedcomputedΔ = current-FY total − prior-FY total per named officer.machine: formula: Δ = FY(n) − FY(n−1)
18Section 03b vehicle mix (computed)ComputedcomputedRSU / PSU / Options grant-date fair values summed per officer from the grants table; % performance-vested = PSU ÷ (RSU+PSU+Options).machine: formula: sums + PSU ratio
19Section 09b board cost (computed)ComputedcomputedCash 206,000 + equity 0 + all other 0 = 206,000, summed across the director compensation table rows.machine: formula: Σ = 206,000
20Inhibrx Biosciences, Inc. (subject), Section 10b CEO totalDEF 14A2026-04-230002007919-26-000014CEO total compensation as printed in Inhibrx Biosciences, Inc.'s own proxy. As printed: 2,892,473. Filing ↗machine: span 234894–234903