Ostrowski Erik — SEC Form 4 filings
SEC reporting owner CIK 1762507. 7 Form 4 filings on record with FilingPulse; latest filed 2026-07-01.
Transaction summary — filings shown
Covers all 7 filings on record, filed 2024-02-05 to 2026-07-01. 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): 3 legs across 3 filings — 132,284 shares, $262,385 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 9.
- Largest priced transaction: sale of 41,314 shares @ $3.67 ($151,622) in Akebia Therapeutics, Inc., filed 2025-07-01.
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 |
|---|---|---|---|---|---|
| Akebia Therapeutics, Inc. (AKBA) | SVP, CFO, CBO & Treasurer | 6 | — | 3 legs · 132,284 sh · $262,385 | 6 |
| AVROBIO, Inc. (AVRO) | Interim CEO, President and CFO | 1 | — | — | 3 |
Form 4 filings — Ostrowski Erik
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-07-01 | 4 | Akebia Therapeutics, Inc. (AKBA) | Sale (S): 56,019 @ $1.11 | EDGAR |
| 2026-02-04 | 4 | Akebia Therapeutics, Inc. (AKBA) | Sale (S): 34,951 @ $1.39 | EDGAR |
| 2026-02-03 | 4 | Akebia Therapeutics, Inc. (AKBA) | Grant/award (A): 204,000 @ $0 · Grant/award (A): 320,000 (derivative) @ $0 | EDGAR |
| 2025-07-01 | 4 | Akebia Therapeutics, Inc. (AKBA) | Sale (S): 41,314 @ $3.67 | EDGAR |
| 2025-02-04 | 4 | Akebia Therapeutics, Inc. (AKBA) | Grant/award (A): 194,900 @ $0 · Grant/award (A): 292,300 (derivative) @ $0 | EDGAR |
| 2024-07-02 | 4 | Akebia Therapeutics, Inc. (AKBA) | Grant/award (A): 350,000 @ $0 · Grant/award (A): 500,000 (derivative) @ $0 | EDGAR |
| 2024-02-05 | 4 | AVROBIO, Inc. (AVRO) | Option exercise (M): 40,084 @ $0 · Tax withholding (F): 13,099 @ $1.20 · Option exercise (M): 40,084 (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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