Henn Matthew R — SEC Form 4 filings
SEC reporting owner CIK 1767321. 16 Form 4 filings on record with FilingPulse; latest filed 2026-08-18.
Transaction summary — filings shown
Covers all 16 filings on record, filed 2024-02-16 to 2026-08-18. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 12 legs across 12 filings — 16,502 shares, $37,795 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 44.
- Largest priced transaction: sale of 1,257 shares @ $17.30 ($21,746) in Seres Therapeutics, Inc., filed 2025-11-18.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| Seres Therapeutics, Inc. (MCRB) | See Remarks | 16 | — | 12 legs · 16,502 sh · $37,795 | 44 |
Form 4 filings — Henn Matthew R
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-08-18 | 4 | Seres Therapeutics, Inc. (MCRB) | Option exercise (M): 238 · Sale (S): 81 @ $4.55 · Option exercise (M): 140 (derivative) @ $0 · Option exercise (M): 98 (derivative) @ $0 | EDGAR |
| 2026-07-10 | 4 | Seres Therapeutics, Inc. (MCRB) | Grant/award (A): 25,000 (derivative) @ $0 | EDGAR |
| 2026-05-19 | 4 | Seres Therapeutics, Inc. (MCRB) | Option exercise (M): 238 · Sale (S): 77 @ $7.53 · Option exercise (M): 141 (derivative) @ $0 · Option exercise (M): 97 (derivative) @ $0 | EDGAR |
| 2026-03-06 | 4 | Seres Therapeutics, Inc. (MCRB) | Grant/award (A): 75,000 (derivative) @ $0 | EDGAR |
| 2026-02-18 | 4 | Seres Therapeutics, Inc. (MCRB) | Option exercise (M): 239 · Sale (S): 89 @ $8.47 · Option exercise (M): 141 (derivative) @ $0 · Option exercise (M): 98 (derivative) @ $0 | EDGAR |
| 2025-11-18 | 4 | Seres Therapeutics, Inc. (MCRB) | Option exercise (M): 3,998 · Option exercise (M): 140 · Option exercise (M): 98 · Sale (S): 1,257 @ $17.30 · Option exercise (M): 3,998 (derivative) @ $0 · Option exercise (M): 140 (derivative) @ $0 · +1 more | EDGAR |
| 2025-09-30 | 4 | Seres Therapeutics, Inc. (MCRB) | Grant/award (A): 3,998 (derivative) @ $0 | EDGAR |
| 2025-08-19 | 4 | Seres Therapeutics, Inc. (MCRB) | Option exercise (M): 141 · Option exercise (M): 97 · Sale (S): 73 @ $16.65 · Option exercise (M): 141 (derivative) @ $0 · Option exercise (M): 97 (derivative) @ $0 | EDGAR |
| 2025-05-19 | 4 | Seres Therapeutics, Inc. (MCRB) | Option exercise (M): 140 · Option exercise (M): 98 · Sale (S): 77 @ $7.28 · Option exercise (M): 140 (derivative) @ $0 · Option exercise (M): 98 (derivative) @ $0 | EDGAR |
| 2025-02-19 | 4 | Seres Therapeutics, Inc. (MCRB) | Option exercise (M): 2,813 · Option exercise (M): 7,813 · Sale (S): 3,953 @ $0.81 · Option exercise (M): 2,813 (derivative) @ $0 · Option exercise (M): 7,813 (derivative) @ $0 | EDGAR |
| 2025-02-11 | 4 | Seres Therapeutics, Inc. (MCRB) | Grant/award (A): 650,000 (derivative) @ $0 | EDGAR |
| 2024-11-19 | 4 | Seres Therapeutics, Inc. (MCRB) | Option exercise (M): 2,812 · Sale (S): 927 @ $0.54 · Option exercise (M): 2,812 (derivative) @ $0 | EDGAR |
| 2024-10-29 | 4 | Seres Therapeutics, Inc. (MCRB) | Option exercise (M): 12,622 @ $0 · Sale (S): 3,984 @ $0.69 · Option exercise (M): 12,622 (derivative) @ $0 | EDGAR |
| 2024-08-19 | 4 | Seres Therapeutics, Inc. (MCRB) | Option exercise (M): 2,813 · Sale (S): 923 @ $0.84 · Option exercise (M): 2,813 (derivative) @ $0 | EDGAR |
| 2024-05-17 | 4 | Seres Therapeutics, Inc. (MCRB) | Option exercise (M): 2,812 · Sale (S): 891 @ $0.94 · Option exercise (M): 2,812 (derivative) @ $0 | EDGAR |
| 2024-02-16 | 4 | Seres Therapeutics, Inc. (MCRB) | Option exercise (M): 11,250 · Sale (S): 4,170 @ $1.08 · Grant/award (A): 187,500 (derivative) @ $0 · Grant/award (A): 287,905 (derivative) @ $0 · Grant/award (A): 31,250 (derivative) @ $0 · Option exercise (M): 11,250 (derivative) @ $0 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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