Velarion · Company Intelligence
Compensation Brief
Fiscal year 2025 · Filings through 2026-07-07

Solid Biosciences (SLDB)

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.

$5,223,442
Alexander Cumbo total, FY2025
CEO pay percentile vs peers
CEO-to-median pay ratio
92.13%
Say-on-pay support, latest vote
Companies that benchmark against SLDB
4 companies name SLDB as a compensation peer

Each company listed discloses SLDB 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 SLDB 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
Alexander Cumbo$650,988$449,182$2,318,275$1,792,397$0$0$12,600$5,223,442
President, Chief Executive Officer and Director
David Tyronne Howton513,422265,6961,000,488796,6210012,6002,588,827
Chief Operating Officer and Secretary
Gabriel Brooks502,164259,870798,634756,7900010,6982,328,156
Chief Medical 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
Alexander Cumbo$5,223,442
David Tyronne Howton2,588,827
Gabriel Brooks2,328,156

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
Georgia KerestyDirector2026-06-10A77,500$0$0Derivative, Class A CommonForm 4 ↗
Lynne SullivanDirector2026-06-10A77,50000Derivative, Class A CommonForm 4 ↗
Martin FreedDirector2026-06-10A77,50000Derivative, Class A CommonForm 4 ↗
Ilan GanotDirector2026-06-10A77,50000Derivative, Class A CommonForm 4 ↗
Clare KahnDirector2026-06-10A77,50000Derivative, Class A CommonForm 4 ↗
Adam StoneDirector2026-06-10A77,50000Derivative, Class A CommonForm 4 ↗
Sukumar NagendranDirector2026-06-10A77,50000Derivative, Class A CommonForm 4 ↗
Ian SmithDirector2026-06-10A77,50000Derivative, Class A CommonForm 4 ↗
PERCEPTIVE ADVISORS LLCDirector2026-06-10A77,50000Derivative, Class A CommonForm 4 ↗
Ian SmithDirector2026-07-02D3,44000Derivative, Class A CommonForm 4 ↗
Ian SmithDirector2026-07-02A3,440CommonForm 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
Alexander CumboOPTION$1,792,397
Alexander CumboPRSU2,318,275
David Tyronne HowtonPRSU1,000,488
Gabriel BrooksPRSU798,634
Gabriel BrooksOPTION756,790
David Tyronne HowtonOPTION796,621
03b

Vehicle mix — grant-date fair value by award type

Named executive officerTime-vested (RSU)Performance-vested (PSU)Options / SARs% performance-vested
Alexander Cumbo$0$0$1,792,3970.0%
David Tyronne Howton00796,6210.0%
Gabriel Brooks00756,7900.0%

% 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
Gabriel BrooksRSU112,900$636,756
David Tyronne HowtonRSU13,05273,613
David Tyronne HowtonRSU44,063248,515
Alexander CumboRSU168,750951,750
David Tyronne HowtonRSU75,000423,000
Gabriel BrooksRSU19,500109,980
Alexander CumboRSU90,094508,130
Alexander CumboOption130,1377.85
Alexander CumboOption57,2226.77
Alexander CumboPSU508,2032,866,265
David Tyronne HowtonRSU169,100953,724
Gabriel BrooksOption35,7462.15
Alexander CumboRSU28,613161,377
David Tyronne HowtonOption63,6447.85
Gabriel BrooksOption142,5006.17
Gabriel BrooksOption47,3947.85
David Tyronne HowtonOption26,0976.77
Gabriel BrooksPSU176,542995,697
Alexander CumboRSU401,6002,265,024
Gabriel BrooksRSU71,250401,850
David Tyronne HowtonPSU238,0241,342,455
Gabriel BrooksRSU32,813185,065
David Tyronne HowtonOption150,0006.17
Alexander CumboOption337,5006.17
05

Incentive-plan design — the Compensation Discussion & Analysis

Our executive compensation embodies a pay-for-performance philosophy that supports our business strategy, aligns the interests of our executives with our stockholders and promotes company performance. At the same time, we believe our program does not encourage excessive risk-taking by management.

CEO STI target (% of salary)60%
CEO LTI target (% of salary)
Independent consultantRadford (AON Hewitt)
Clawback policyTrue
Anti-hedgingTrue
Anti-pledgingTrue
06

Say-on-pay — recent advisory votes

Meeting yearMeeting dateForAgainstAbstainSupportOutcome
20262026-06-1072,596,9806,203,63438,75592.13%Passed
20252025-06-1257,115,4095,143,88258,00191.74%Passed

Rows are labeled by annual-meeting year, with the meeting date beside each; the vote held in a given year acts on the prior fiscal year's compensation.

Say-on-pay — history, company's computation

Meeting yearMeeting dateApproval — company's computation
20262026-06-1092.13%a
20252025-06-1291.74%b

a. Voting standard not stated in the filing.

b. Voting standard not stated in the filing.

Approval percentages are the company's own reported computations under its own stated standard, not recomputed by Velarion. Where a company does not state a standard, none is assumed.

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
Ian SmithIndependent · Board Chair$75,000$75,001$372,682$0$0$522,683
Lynne SullivanIndependent · Audit (Chair) · Nominating/Governance62,321297,68500360,006
Martin FreedIndependent · Compensation · Clinical (Chair)60,553297,68500358,238
Georgia KerestyIndependent · Audit · Compensation (Chair)59,990297,68500357,675
Adam StoneIndependent · Audit · Nominating/Governance (Chair)57,990297,68500355,675
Sukumar NagendranIndependent · Compensation · Clinical53,053297,68500350,738
Clare KahnIndependent · Nominating/Governance · Clinical52,053297,68500349,738
Ilan GanotIndependent40,000297,68500337,685
Alexander CumboEmployee director00000
09

Board fee structure and ownership guideline

Annual cash retainer$40,000
Annual equity retainer$297,685
Per board meeting fee
Committee chair fees (audit / comp / nom-gov)10,000 / 6,000 / 5,000
Stock ownership guideline
09b

Total cost of the board

ComponentFY2025
Cash retainers and fees$460,960
Equity awards (grant-date value)$75,001
All other compensation$0
Total cost of the board$535,961

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
1Solid Biosciences2025Alexander Cumbo$650,988$2,318,275$1,792,397$0$5,223,442

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.

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, Alexander CumboDEF 14A2026-04-230001193125-26-173642Section “2025 Summary Compensation Table”. As printed: 5,223,442. Filing ↗machine: r2 · c25 · span 472915–472924
2Section 01, David Tyronne HowtonDEF 14A2026-04-230001193125-26-173642Section “2025 Summary Compensation Table”. As printed: 2,588,827. Filing ↗machine: r8 · c25 · span 525133–525142
3Section 01, Gabriel BrooksDEF 14A2026-04-230001193125-26-173642Section “2025 Summary Compensation Table”. As printed: 2,328,156. Filing ↗machine: r5 · c25 · span 499008–499017
4Section 03, Alexander Cumbo OPTIONDEF 14A2026-04-230001193125-26-173642Section “E XECUTIVE COMPENSATION” · grants of plan-based awards table. Filing ↗machine: t7 · r2 · c17 · span 470162–470171
5Section 03, Alexander Cumbo PRSUDEF 14A2026-04-230001193125-26-173642Section “E XECUTIVE COMPENSATION” · grants of plan-based awards table. Filing ↗machine: t7 · r2 · c13 · span 468784–468793
6Section 03, David Tyronne Howton PRSUDEF 14A2026-04-230001193125-26-173642Section “E XECUTIVE COMPENSATION” · grants of plan-based awards table. Filing ↗machine: t7 · r8 · c13 · span 521004–521013
7Section 03, Gabriel Brooks PRSUDEF 14A2026-04-230001193125-26-173642Section “E XECUTIVE COMPENSATION” · grants of plan-based awards table. Filing ↗machine: t7 · r5 · c13 · span 494881–494888
8Section 03, Gabriel Brooks OPTIONDEF 14A2026-04-230001193125-26-173642Section “E XECUTIVE COMPENSATION” · grants of plan-based awards table. Filing ↗machine: t7 · r5 · c17 · span 496257–496264
9Section 03, David Tyronne Howton OPTIONDEF 14A2026-04-230001193125-26-173642Section “E XECUTIVE COMPENSATION” · grants of plan-based awards table. Filing ↗machine: t7 · r8 · c17 · span 522382–522389
10Section 07, pay ratio10-K2026-03-190001193125-26-115928Section “CEO Pay Ratio”. As printed: —. Filing ↗
11Section 08, Ian SmithDEF 14A2026-04-230001193125-26-173642Section “Director Compensation”. As printed: 522,683. Filing ↗machine: t5 · r2 · c19 · span 350693–350700
12Section 08, Lynne SullivanDEF 14A2026-04-230001193125-26-173642Section “Director Compensation”. As printed: 360,006. Filing ↗machine: t5 · r9 · c19 · span 402302–402309
13Section 08, Martin FreedDEF 14A2026-04-230001193125-26-173642Section “Director Compensation”. As printed: 358,238. Filing ↗
14Section 08, Georgia KerestyDEF 14A2026-04-230001193125-26-173642Section “Director Compensation”. As printed: 357,675. Filing ↗
15Section 08, Adam StoneDEF 14A2026-04-230001193125-26-173642Section “Director Compensation”. As printed: 355,675. Filing ↗machine: t5 · r8 · c19 · span 394934–394941
16Section 08, Sukumar NagendranDEF 14A2026-04-230001193125-26-173642Section “Director Compensation”. As printed: 350,738. Filing ↗
17Section 08, Clare KahnDEF 14A2026-04-230001193125-26-173642Section “Director Compensation”. As printed: 349,738. Filing ↗
18Section 08, Ilan GanotDEF 14A2026-04-230001193125-26-173642Section “Director Compensation”. As printed: 337,685. Filing ↗machine: t5 · r4 · c19 · span 365439–365446
19Section 08, Alexander CumboDEF 14A2026-04-230001193125-26-173642Section “Director Compensation”. As printed: 0. Filing ↗
20Section 02, Georgia Keresty 2026-06-10Form 42026-06-110001193125-26-267500Insider equity transaction reported since the proxy statement. Filing ↗
21Section 02, Lynne Sullivan 2026-06-10Form 42026-06-110001193125-26-267494Insider equity transaction reported since the proxy statement. Filing ↗
22Section 02, Martin Freed 2026-06-10Form 42026-06-110001193125-26-267499Insider equity transaction reported since the proxy statement. Filing ↗
23Section 02, Ilan Ganot 2026-06-10Form 42026-06-110001193125-26-267502Insider equity transaction reported since the proxy statement. Filing ↗
24Section 02, Clare Kahn 2026-06-10Form 42026-06-110001193125-26-267496Insider equity transaction reported since the proxy statement. Filing ↗
25Section 02, Adam Stone 2026-06-10Form 42026-06-110001193125-26-267489Insider equity transaction reported since the proxy statement. Filing ↗
26Section 02, Sukumar Nagendran 2026-06-10Form 42026-06-110001193125-26-267504Insider equity transaction reported since the proxy statement. Filing ↗
27Section 02, Ian Smith 2026-06-10Form 42026-06-110001193125-26-267503Insider equity transaction reported since the proxy statement. Filing ↗
28Section 02, PERCEPTIVE ADVISORS LLC 2026-06-10Form 42026-06-110001193125-26-267501Insider equity transaction reported since the proxy statement. Filing ↗
29Section 02, Ian Smith 2026-07-02Form 42026-07-070001193125-26-297456Insider equity transaction reported since the proxy statement. Filing ↗
30Section 02, Ian Smith 2026-07-02Form 42026-07-070001193125-26-297456Insider equity transaction reported since the proxy statement. Filing ↗
31Section 06, 2026 voteForm 8-K2026-06-100001193125-26-265804Item 5.07 · say-on-pay result. As reported: 92.13% (votes for as printed: 72,596,980). Filing ↗
32Section 06, 2025 voteForm 8-K2025-06-130000950170-25-086215Item 5.07 · say-on-pay result. As reported: 91.74% (votes for as printed: 57,115,409). Filing ↗
33Section 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
34Section 09b board cost (computed)ComputedcomputedCash 460,960 + equity 75,001 + all other 0 = 535,961, summed across the director compensation table rows.machine: formula: Σ = 535,961
35Solid Biosciences (subject), Section 10b CEO totalDEF 14A2026-04-230001193125-26-173642CEO total compensation as printed in Solid Biosciences's own proxy. As printed: 5,223,442. Filing ↗machine: r2 · c25 · span 472915–472924