WALSH MATTHEW M — SEC Form 4 filings
SEC reporting owner CIK 1269428. 14 Form 4 filings on record with FilingPulse; latest filed 2026-05-15.
Transaction summary — filings shown
Covers all 14 filings on record, filed 2024-03-01 to 2026-05-15. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 1 leg across 1 filing — 11,400 shares, $100,548 total (shares × price as filed).
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 55.
- Largest priced transaction: purchase of 11,400 shares @ $8.82 ($100,548) in Organon & Co., filed 2025-05-06.
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 |
|---|---|---|---|---|---|
| Organon & Co. (OGN) | Chief Financial Officer | 11 | 1 leg · 11,400 sh · $100,548 | — | 46 |
| Certara, Inc. (CERT) | Director | 3 | — | — | 9 |
Form 4 filings — WALSH MATTHEW M
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-05-15 | 4 | Certara, Inc. (CERT) | Option exercise (M): 15,757 @ $0 · Option exercise (M): 15,757 (derivative) @ $0 · Grant/award (A): 33,222 (derivative) @ $0 | EDGAR |
| 2026-04-02 | 4 | Organon & Co. (OGN) | Option exercise (M): 12,047 @ $0 · Tax withholding (F): 4,127 @ $5.70 · Option exercise (M): 21,546 @ $0 · Tax withholding (F): 7,380 @ $5.70 · Grant/award (A): 321,368 (derivative) @ $0 · Grant/award (A): 83,472 (derivative) @ $0 · +2 more | EDGAR |
| 2026-03-31 | 4 | Organon & Co. (OGN) | Option exercise (M): 15,071 @ $0 · Tax withholding (F): 5,162 @ $5.84 · Option exercise (M): 15,071 (derivative) @ $0 | EDGAR |
| 2026-03-03 | 4 | Organon & Co. (OGN) | Grant/award (A): 42,599 @ $0 · Tax withholding (F): 14,887 @ $7.17 · Grant/award (A): 12,020 @ $0 · Tax withholding (F): 4,117 @ $7.23 | EDGAR |
| 2025-05-22 | 4 | Certara, Inc. (CERT) | Option exercise (M): 11,928 @ $0 · Option exercise (M): 11,928 (derivative) @ $0 · Grant/award (A): 15,757 (derivative) @ $0 | EDGAR |
| 2025-05-06 | 4 | Organon & Co. (OGN) | Purchase (P): 11,400 @ $8.82 | EDGAR |
| 2025-04-02 | 4 | Organon & Co. (OGN) | Option exercise (M): 15,070 @ $0 · Tax withholding (F): 7,422 @ $14.51 · Option exercise (M): 12,046 @ $0 · Tax withholding (F): 5,933 @ $14.51 · Option exercise (M): 7,754 @ $0 · Tax withholding (F): 3,819 @ $14.51 · +5 more | EDGAR |
| 2025-02-24 | 4 | Organon & Co. (OGN) | Grant/award (A): 30,414 @ $0 · Tax withholding (F): 10,662 @ $14.92 · Grant/award (A): 5,570 @ $0 · Tax withholding (F): 1,908 @ $15.29 | EDGAR |
| 2024-09-05 | 4 | Organon & Co. (OGN) | Grant/award (A): 7,189 @ $0 · Tax withholding (F): 3,541 @ $20.35 | EDGAR |
| 2024-05-23 | 4 | Certara, Inc. (CERT) | Option exercise (M): 8,663 @ $0 · Option exercise (M): 8,663 (derivative) @ $0 · Grant/award (A): 11,928 (derivative) @ $0 | EDGAR |
| 2024-05-07 | 4 | Organon & Co. (OGN) | Option exercise (M): 8,310 @ $0 · Tax withholding (F): 4,093 @ $19.61 · Option exercise (M): 8,310 (derivative) @ $0 | EDGAR |
| 2024-04-03 | 4 | Organon & Co. (OGN) | Option exercise (M): 7,753 @ $0 · Tax withholding (F): 3,819 @ $18.80 · Option exercise (M): 12,046 @ $0 · Tax withholding (F): 5,933 @ $18.80 · Option exercise (M): 7,753 (derivative) @ $0 · Option exercise (M): 12,046 (derivative) @ $0 | EDGAR |
| 2024-04-02 | 4 | Organon & Co. (OGN) | Grant/award (A): 45,212 (derivative) @ $0 · Grant/award (A): 185,185 (derivative) @ $0 | EDGAR |
| 2024-03-01 | 4 | Organon & Co. (OGN) | Option exercise (M): 33,044 · Tax withholding (F): 11,393 @ $18.04 · Option exercise (M): 33,044 (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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