Seres Therapeutics, Inc.·4

Mar 6, 4:33 PM ET

Thorell Marella 4

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Seres (MCRB) EVP/CFO Marella Receives 22,500-Share Award

What Happened
Thorell Marella, EVP and Chief Financial Officer of Seres Therapeutics (MCRB), was granted a 22,500-share derivative award (reported as A) on 2026-03-04. The award is reported at $0.00 (no cash exchanged at grant) and is a stock option-type award subject to vesting rather than an immediate purchase or sale.

Key Details

  • Transaction date: 2026-03-04; Form 4 filed: 2026-03-06 (timely filing).
  • Transaction type/code: A (grant/award); reported as a derivative instrument at $0.00.
  • Shares involved: 22,500-share award. Reported total value: $0 (no cash paid).
  • Vesting (footnote): 25% vests on March 2, 2027; remaining 75% vests in 12 equal quarterly installments thereafter (effectively a four‑year schedule).
  • Shares owned after transaction: Not disclosed in the provided filing summary.
  • Remarks: Marella is EVP and Chief Financial Officer.

Context
This is a compensation award (option-like derivative) subject to a multi-year vesting schedule—common for executive incentives. It does not represent an immediate purchase or sale of shares and does not by itself indicate insider buying or selling intent.