Who
Heidi Hunter
Director
Company insider
Files Form 4 as: Director, Sutro Biopharma; Director, IO Biotech.
In numbers
- Trades disclosed
- 13
- Buys
- 1
- Sells
- 0
- Bought
- $21K
- Sold
- $0
- Companies
- 2
- Companies where not an officer
- 2
- First trade
- 19 Nov 2021
- Last trade
- 5 Jun 2026
- Last filed
- 9 Jun 2026
Companies traded
Activity over time
1 May 2025 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 5 Jun 2026filed 9 Jun 2026 | STRO Sutro Biopharmaoption or derivative · Biotechnology | SEC FORM 4 Code A | —10,000 at $0.00 | filing |
| 5 Jun 2026filed 9 Jun 2026 | STRO Sutro Biopharmaoption or derivative · Biotechnology | SEC FORM 4 Code A | —10,000 at $0.00 | filing |
| 23 Dec 2025filed 29 Dec 2025 | STRO Sutro Biopharmaoption or derivative · Biotechnology | SEC FORM 4 Code A | —1,500 at $0.00 | filing |
| 6 Jun 2025filed 10 Jun 2025 | STRO Sutro Biopharmaoption or derivative · Biotechnology | SEC FORM 4 Code A | —50,000 at $0.00 | filing |
| 5 Jun 2025filed 6 Jun 2025 | IO Biotechoption or derivative | SEC FORM 4 Code A | —35,144 at $0.00 | filing |
| 30 May 2025filed 2 Jun 2025 | IO Biotech | SEC FORM 4 Bought | $21K15,000 at $1.39 | filing |
| 6 Jun 2024filed 10 Jun 2024 | STRO Sutro Biopharmaoption or derivative · Biotechnology | SEC FORM 4 Code A | —35,000 at $0.00 | filing |
| 6 Jun 2024filed 7 Jun 2024 | IO Biotechoption or derivative | SEC FORM 4 Code A | —45,642 at $0.00 | filing |
| 11 Aug 2023filed 15 Aug 2023 | IO Biotechoption or derivative | SEC FORM 4 Code A | —64,238 at $0.00 | filing |
| 8 Jun 2023filed 12 Jun 2023 | STRO Sutro Biopharmaoption or derivative · Biotechnology | SEC FORM 4 Code A | —25,000 at $0.00 | filing |
| 6 Jun 2022filed 8 Jun 2022 | STRO Sutro Biopharmaoption or derivative · Biotechnology | SEC FORM 4 Code A | —18,500 at $0.00 | filing |
| 19 Nov 2021filed 22 Nov 2021 | STRO Sutro Biopharmaoption or derivative · Biotechnology | SEC FORM 4 Code A | —24,000 at $0.00 | filing |
| 19 Nov 2021filed 22 Nov 2021 | STRO Sutro Biopharmaoption or derivative · Biotechnology | SEC FORM 4 Code A | —9,884 at $0.00 | filing |
News
No headline names them, or the companies they trade most, lately.