Former Co-President and Co-Chief Executive Officer and current Executive Vice President and Chief Financial Officer · Seres Therapeutics, Inc. (MCRB)

Marella Thorell

FY2025 is the first fiscal year CompBrief holds for Marella Thorell as a named executive officer of Seres Therapeutics; the record below is that year, complete. Every figure below is printed as the company filed it and cited to the filing it came from.

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Total disclosed compensation, FY2025

$1,113,396

3rd of 5 named executive officers at Seres Therapeutics by FY2025 total.

5 named officers on file for Seres Therapeutics, FY2025

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What this number hides

The filing gives the total. Seres Therapeutics’s full Executive Compensation Report gives every award, the disclosed peer set and what the total leaves out — the pair adds the board’s.

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Compensation figures as of the proxy filed April 27, 2026 (DEF 14A). Insider transactions since that proxy, current to 2026-11-10.

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Marella Thorell compensation by year

Seres Therapeutics Summary Compensation Table · the one fiscal year held
In US dollars, as Seres Therapeutics reports it. Most recent year shaded. Totals are the company’s disclosed totals.
ComponentFY2025
Salary$494,400
Bonus$166,667
Option awards$446,290
Non-equity incentive$0
Pension and deferred compensation$0
All other$6,039
Total$1,113,396

Each year as stated in that year's proxy. A dash means the company reported no figure in that column. Source: Seres Therapeutics, Inc. DEF 14A filed April 27, 2026, accession 0001193125-26-182036, and prior-year filings. Open the filing on EDGAR.

How this page was built: the Seres Therapeutics, Inc. filed document, accession 0001193125-26-182036. Every figure is read from that document and cited to the page and table it appears in. Filed April 27, 2026.

Equity holdings

unvested awards at FY2025 year-end
TypeUnvested unitsValue at year-endExercise price
Option32,500—$15.64
Option19,688—$15.75

Per the Outstanding Equity Awards at Fiscal Year-End table in Seres Therapeutics, Inc.'s FY2025 proxy; value at the fiscal year-end close, as the company printed it.

Insider transactions since the last proxy

1 Form 4 line since the FY2025 proxy (filed April 27, 2026)
current to 2026-11-10 · updated nightly
DateTransactionPlanSharesPriceHeld after
2026-07-08Grant or award derivative—7,500$0.007,500

The 1 most recent of 1 lines, each as reported on the Form 4. "10b5-1" marks a trade the filing reports under a pre-arranged trading plan. View every Form 4 filing on EDGAR →

Change-in-control & termination

estimated payments Seres Therapeutics discloses, by trigger · FY2025
TriggerCash severanceAccelerated equityBenefits continuationTotal as disclosed
Involuntary termination without cause$494,400$0$44,509$538,909
Resignation for good reason, no change in control$494,400$0$44,509$538,909
Change in control and involuntary termination$494,400$0$44,509$736,669
Change in control and resignation for good reason$494,400$0$44,509$736,669

Per the Potential Payments Upon Termination or Change in Control table in Seres Therapeutics, Inc.'s FY2025 proxy. Estimates as the company printed them; a dash means it printed no figure.

Seres Therapeutics’s named executive officers, FY2025

as the company reported each
Named executive officerRoleFY2025 total
Eric ShaffFormer President and Chief Executive Officer$1,775,549
Thomas DesRosierFormer Co-President and Co-Chief Executive Officer and current Executive Vice President and Chief Legal Officer$1,136,023
Marella Thorell · this pageFormer Co-President and Co-Chief Executive Officer and current Executive Vice President and Chief Financial Officer$1,113,396
Teresa YoungFormer Executive Vice President and Chief Commercial and Strategy Officer$1,021,462
Matthew HennPresident and Chief Scientific Officer$1,014,347

Marella Thorell's compensation dossier, Seres Therapeutics

You have read Marella Thorell's totals and holdings. The dossier adds each equity grant Seres Therapeutics disclosed for Marella Thorell and Seres Therapeutics's own disclosed peer group, where the company discloses them, with every row in a PDF and a CSV cited to its filing.

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The full Seres Therapeutics compensation record

free company brief

This page is one person within Seres Therapeutics's record. The company brief lists every named executive, each linking to their own page.

Compensation, the day it’s disclosed

The CompBrief Daily Digest lists the newest executive and director compensation disclosures as companies file them. Or order Seres Therapeutics's full Executive Compensation Report with peer benchmarking.

How this record is built

Every figure on this page is one figure from a public SEC filing, printed as the filing states it and cited to the document. Compensation totals are Seres Therapeutics's own disclosed totals, not summed by Velarion. Insider transactions are read from Form 4 filings and cover every line filed since the most recent proxy. Nothing is estimated by Velarion; where the company does not disclose a value the cell reads "—", and a section appears only where the company discloses the data. Corrections: records@velarion.ai.

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Marella Thorell's compensation dossier