Erik Ostrowski
CIK 1762507 · SVP, CFO, CBO & Treasurer · last filed 2026-07-01
Erik Ostrowski is a SVP, CFO, CBO & Treasurer who has filed 18 SEC Form 4 insider transactions across 2 companies since 2019. The most recent filing shows the insider sold $62.2K of AKBA on Jul 1, 2026. Across all open-market trades the lifetime net is −$262.4K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $537.9K across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$537.9K
2
18
-$262.4K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| AKBA | SVP, CFO, CBO & Treasurer | 616,616 | $0.87 | $537.9K | -$262.4K | 6 | 2026-07-01 |
| Tectonic Therapeutic, Inc. (AVRO) Delisted | Interim CEO, President and CFO | 2,440 | $16.80 | $41.0K | $0 | 9 | 2024-02-05 |
Recent Filings
18 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-07-01 | AKBA | Sell (S) | −56,019 | -$62.2K | EDGAR |
| 2026-06-29 | AKBA | Notice (144) | −56,019 | -$62.2K | EDGAR |
| 2026-02-04 | AKBA | Sell (S) | −34,951 | -$48.6K | EDGAR |
| 2026-02-03 | AKBA | Grant (A) | +204,000 | $0 | EDGAR |
| 2026-02-02 | AKBA | Notice (144) | −34,951 | -$48.7K | EDGAR |
| 2025-07-01 | AKBA | Sell (S) | −41,314 | -$151.6K | EDGAR |
| 2025-06-30 | AKBA | Notice (144) | −41,314 | -$151.6K | EDGAR |
| 2025-02-04 | AKBA | Grant (A) | +194,900 | $0 | EDGAR |
| 2024-07-02 | AKBA | Grant (A) | +350,000 | $0 | EDGAR |
| 2024-02-05 | Tectonic Therapeutic, Inc. (AVRO) Delisted | Mixed | +26,985 | -$15.7K | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.