Thomas J. DesRosier

Insider Reports History

Identity Names, identifiers, and filing context for this profile. 1 identity field
Reporting-owner location
Lexington, MA
SEC source record Original filing metadata and source links for verification. 1 source field
Latest reporting-owner signature
/s/ Thomas J. DesRosier
Source: Latest parsed Forms 3/4/5 signature
Source evidence Original filing metadata and source links for verification. 1 source field
Transaction source note
Rows are grouped by transaction date from the original SEC filing. Open the aggregated insider activity page to review issuer-level activity across dates.

Reported holdings for Thomas J. DesRosier

Form 4 holding EVP and Chief Legal Officer

Seres Therapeutics, Inc.

Security class
Restricted Stock Units
Shares / value
667
Estimated value
$21,655
Report date
15 Aug 2026
Price
$0.8105
Ownership
Direct
Underlying class
Common Stock
Underlying amount
Form 4 holding EVP and Chief Legal Officer

Seres Therapeutics, Inc.

Security class
Stock Option (right to buy)
Shares / value
7,500
Estimated value
Report date
08 Jul 2026
Price
Ownership
Direct
Underlying class
Common Stock
Underlying amount

Insider Reports Filed by Thomas J. DesRosier

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