Davidson Michael H. — SEC Form 4 filings
SEC reporting owner CIK 1573785. 17 Form 4 filings on record with FilingPulse; latest filed 2026-09-15.
Transaction summary — filings shown
Covers all 17 filings on record, filed 2024-06-24 to 2026-09-15. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 4 legs across 4 filings — 22,500 shares, $394,158 total (shares × price as filed on priced legs).
- Open-market sales (code S, non-derivative): 10 legs across 4 filings — 773,840 shares, $25,328,349 total (shares × price as filed on priced legs).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 27.
- Largest priced transaction: sale of 443,707 shares @ $33.25 ($14,753,258) in NewAmsterdam Pharma Co N.V., filed 2026-03-02.
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 |
|---|---|---|---|---|---|
| NewAmsterdam Pharma Co N.V. (NAMS) | Chief Executive Officer, Director | 9 | 3 legs · 20,000 sh · $394,158 | 10 legs · 773,840 sh · $25,328,349 | 17 |
| TENAX THERAPEUTICS, INC. (TENX) | Director | 4 | 1 leg · 2,500 sh | — | 5 |
| BioAge Labs, Inc. (BIOA) | Director | 3 | — | — | 4 |
| Silence Therapeutics plc (SLN) | Director | 1 | — | — | 1 |
Form 4 filings — Davidson Michael H.
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-15 | 4 | NewAmsterdam Pharma Co N.V. (NAMS) | Purchase (P): 10,000 @ $22.65 | EDGAR |
| 2026-06-12 | 4 | BioAge Labs, Inc. (BIOA) | Grant/award (A): 22,000 (derivative) @ $0 | EDGAR |
| 2026-03-02 | 4 | NewAmsterdam Pharma Co N.V. (NAMS) | Option exercise (M): 443,707 · Sale (S): 443,707 @ $33.25 · Option exercise (M): 443,707 (derivative) @ $0 | EDGAR |
| 2026-02-26 | 4 | NewAmsterdam Pharma Co N.V. (NAMS) | Option exercise (M): 64,708 · Sale (S): 61,547 @ $36.13 · Sale (S): 3,161 @ $36.46 · Option exercise (M): 58,253 · Sale (S): 46,517 @ $35.11 · Sale (S): 10,436 @ $35.96 · +7 more | EDGAR |
| 2026-01-13 | 4 | TENAX THERAPEUTICS, INC. (TENX) | Grant/award (A): 30,000 (derivative) @ $0 | EDGAR |
| 2026-01-09 | 4 | NewAmsterdam Pharma Co N.V. (NAMS) | Sale (S): 11,582 · Grant/award (A): 81,000 · Grant/award (A): 364,000 (derivative) @ $0 | EDGAR |
| 2025-07-03 | 4 | TENAX THERAPEUTICS, INC. (TENX) | Grant/award (A): 80,000 (derivative) @ $0 | EDGAR |
| 2025-06-09 | 4 | BioAge Labs, Inc. (BIOA) | Grant/award (A): 22,000 (derivative) @ $0 | EDGAR |
| 2025-03-28 | 4 | NewAmsterdam Pharma Co N.V. (NAMS) | Grant/award (A): 30,992 @ $0 · Option exercise (M): 38,394 @ $0 · Sale (S): 12,258 · Grant/award (A): 38,394 (derivative) · Option exercise (M): 38,394 (derivative) | EDGAR |
| 2025-01-07 | 4 | NewAmsterdam Pharma Co N.V. (NAMS) | Grant/award (A): 123,529 · Grant/award (A): 670,467 (derivative) @ $0 | EDGAR |
| 2025-01-06 | 4 | Silence Therapeutics plc (SLN) | Grant/award (A): 48,000 (derivative) @ $0 | EDGAR |
| 2024-12-12 | 4 | TENAX THERAPEUTICS, INC. (TENX) | Grant/award (A): 100,000 (derivative) @ $0 | EDGAR |
| 2024-10-11 | 4 | NewAmsterdam Pharma Co N.V. (NAMS) | Gift (G): 15,000 (derivative) @ $11.50 | EDGAR |
| 2024-09-27 | 4 | BioAge Labs, Inc. (BIOA) | Grant/award (A): 15,000 (derivative) @ $0 · Grant/award (A): 33,986 (derivative) @ $0 | EDGAR |
| 2024-08-22 | 4 | NewAmsterdam Pharma Co N.V. (NAMS) | Purchase (P): 5,000 @ $16.27 | EDGAR |
| 2024-08-08 | 4 | TENAX THERAPEUTICS, INC. (TENX) | Purchase (P): 2,500 · Purchase (P): 47,500 (derivative) · Purchase (P): 25,000 (derivative) | EDGAR |
| 2024-06-24 | 4 | NewAmsterdam Pharma Co N.V. (NAMS) | Purchase (P): 5,000 @ $17.26 | 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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