Kosacz Barbara — SEC Form 4 filings
SEC reporting owner CIK 1763316. 10 Form 4 filings on record with FilingPulse; latest filed 2026-07-14.
Transaction summary — filings shown
Covers all 10 filings on record, filed 2024-02-16 to 2026-07-14. 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, …): 17.
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 |
|---|---|---|---|---|---|
| XOMA Royalty Corp (XOMA) | Director | 5 | — | — | 12 |
| LeonaBio, Inc. (LONA) | Director | 4 | — | — | 4 |
| CERO THERAPEUTICS HOLDINGS, INC. (CERO) | Director | 1 | — | — | 1 |
Form 4 filings — Kosacz Barbara
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-07-14 | 4 | XOMA Royalty Corp (XOMA) | Other (J): 6,269 · Disposition to issuer (D): 19,979 (derivative) @ $0 · Disposition to issuer (D): 8,167 (derivative) @ $0 · Disposition to issuer (D): 6,152 (derivative) @ $0 · Disposition to issuer (D): 5,101 (derivative) @ $0 · Disposition to issuer (D): 8,996 (derivative) @ $0 · +2 more | EDGAR |
| 2026-06-24 | 4 | LeonaBio, Inc. (LONA) | Grant/award (A): 28,000 (derivative) @ $0 | EDGAR |
| 2026-05-26 | 4 | XOMA Royalty Corp (XOMA) | Grant/award (A): 3,586 @ $0 | EDGAR |
| 2026-04-13 | 4 | LeonaBio, Inc. (LONA) | Grant/award (A): 28,000 (derivative) @ $0 | EDGAR |
| 2025-06-03 | 4 | Athira Pharma, Inc. (ATHA) | Grant/award (A): 20,900 (derivative) @ $0 | EDGAR |
| 2025-05-23 | 4 | XOMA Royalty Corp (XOMA) | Grant/award (A): 5,971 @ $0 | EDGAR |
| 2025-05-23 | 4 | XOMA Royalty Corp (XOMA) | Grant/award (A): 5,971 @ $0 | EDGAR |
| 2024-05-24 | 4 | Athira Pharma, Inc. (ATHA) | Grant/award (A): 20,900 (derivative) @ $0 | EDGAR |
| 2024-05-17 | 4 | XOMA Corp (XOMA) | Grant/award (A): 9,763 (derivative) @ $0 | EDGAR |
| 2024-02-16 | 4 | CERO THERAPEUTICS HOLDINGS, INC. (CERO) | Other (J): 5,828 | 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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