Velarion · Company Intelligence
Compensation Brief
Fiscal year 2025 · Filings through 2026-04-27

Sionna Therapeutics (SION)

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.

$6,981,217
Michael Cloonan total, FY2025
CEO pay percentile vs peers
CEO-to-median pay ratio
Say-on-pay support, latest vote
Companies that benchmark against SION
No companies currently name SION as a compensation peer in their most recent disclosure.

This is the complete answer, not a partial one — the list is never padded.

01

Summary Compensation Table — fiscal year 2025

Named executive officerSalaryBonusStock awardsOption awardsNon-equity incentivePension / NQDCAll otherTotal
Michael Cloonan$646,580$0$0$5,950,575$374,062$0$10,000$6,981,217
President and Chief Executive Officer
Caroline Stark Beer158,94530,00005,324,78371,59907,5695,592,896
Chief Business Officer
Elena Ridloff506,677002,085,765254,925010,0002,857,367
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
Michael Cloonan$6,981,217
Caroline Stark Beer5,592,896
Elena Ridloff2,857,367

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

No insider equity transactions reported since the proxy statement.

04

Outstanding equity awards at fiscal year-end 2025

ExecutiveAwardShares unvestedExercise priceMarket value unvested
Michael CloonanOption13,8536.11
Michael CloonanOption369,5546.11
Michael CloonanOption356,45018
Michael CloonanOption4,5676.11
Michael CloonanOption81,9856.11
Michael CloonanOption124,94118
Caroline Stark BeerOption255,00028.47
05

Incentive-plan design — the Compensation Discussion & Analysis

CEO STI target (% of salary)
CEO LTI target (% of salary)
Independent consultantPearl Meyer & Partners, LLC
Clawback policytrue
Anti-hedging
Anti-pledging
07

CEO pay ratio

Ratio (CEO : median employee)
CEO total compensation
Median employee compensation
09

Board fee structure and ownership guideline

Annual cash retainer$40,000
Annual equity retainer
Per board meeting fee
Committee chair fees (audit / comp / nom-gov)16,000 / 12,000 / 9,000
Stock ownership guideline
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
1Sionna Therapeutics2025Michael Cloonan$646,580$0$5,950,575$374,062$6,981,217

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, Michael CloonanDEF 14A2026-04-270001628280-26-027489Section “Executive Compensation”. As printed: 6,981,217. Filing ↗machine: r2 · c42 · span 310366–310375
2Section 01, Caroline Stark BeerDEF 14A2026-04-270001628280-26-027489Section “Executive Compensation”. As printed: 5,592,896. Filing ↗machine: r6 · c42 · span 321472–321481
3Section 01, Elena RidloffDEF 14A2026-04-270001628280-26-027489Section “Executive Compensation”. As printed: 2,857,367. Filing ↗machine: r4 · c42 · span 315958–315967
4Section 07, pay ratio10-K2026-03-020001628280-26-012996Section “CEO Pay Ratio”. As printed: —. Filing ↗
5Sionna Therapeutics (subject), Section 10b CEO totalDEF 14A2026-04-270001628280-26-027489CEO total compensation as printed in Sionna Therapeutics's own proxy. As printed: 6,981,217. Filing ↗machine: r2 · c42 · span 310366–310375