Brown William Matthew — SEC Form 4 filings
SEC reporting owner CIK 1556095. 4 Form 4 filings on record with FilingPulse; latest filed 2026-09-09.
Transaction summary — filings shown
Covers all 4 filings on record, filed 2024-04-01 to 2026-09-09. 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): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 12.
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 |
|---|---|---|---|---|---|
| Zapata Computing Holdings Inc. (ZPTA) | Director | 3 | — | — | 10 |
| Andretti Acquisition Corp. II (POLE) | CEO, 10% owner | 1 | — | — | 2 |
Form 4 filings — Brown William Matthew
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-09 | 4 | Andretti Acquisition Corp. II (POLE) jointly with Andretti Sponsor II LLC, Andretti Mario, ANDRETTI MICHAEL, SANDBROOK WILLIAM J | Conversion (C): 5,749,999 · Conversion (C): 5,749,999 (derivative) @ $0 | EDGAR |
| 2024-07-22 | 4 | Zapata Computing Holdings Inc. (ZPTA) | Other (J): 274,632 @ $0 · Other (J): 784,250 (derivative) @ $0 | EDGAR |
| 2024-07-12 | 4 | Zapata Computing Holdings Inc. (ZPTA) | Grant/award (A): 25,000 @ $0 · Grant/award (A): 75,000 (derivative) @ $0 | EDGAR |
| 2024-04-01 | 4 | Zapata Computing Holdings Inc. (ZPTA) jointly with Andretti Sponsor LLC, ANDRETTI MICHAEL, SANDBROOK WILLIAM J | Other (J): 4,189,077 · Other (J): 652,214 · Grant/award (A): 34,744 · Other (J): 243,368 · Other (J): 370,923 · Other (J): 4,189,077 (derivative) | 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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