Who
Geert R. Kersten
Chief Executive Officer
Company insider
Files Form 4 as: Chief Executive Officer, Cel-Sci.
In numbers
- Trades disclosed
- 192
- Buys
- 29
- Sells
- 0
- Bought
- $2.7M
- Sold
- $0
- Companies
- 1
- Companies where not an officer
- 0
- First trade
- 30 Dec 2005
- Last trade
- 30 Sep 2026
- Last filed
- 1 Oct 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 30 Sep 2026filed 1 Oct 2026 | CVM Cel-SciBiotechnology | SEC FORM 4 Code A | $5,3992,621 at $2.06 | filing |
| 25 Aug 2026filed 26 Aug 2026 | CVM Cel-SciBiotechnology | SEC FORM 4 Bought | $138K100,000 at $1.38 | filing |
| 25 Aug 2026filed 26 Aug 2026 | CVM Cel-SciBiotechnology | SEC FORM 4 Bought | $138K100,000 at $1.38 | filing |
| 14 Aug 2026filed 17 Aug 2026 | CVM Cel-Scioption or derivative · Biotechnology | SEC FORM 4 Code A | $3,000300,000 at $0.01 | filing |
| 14 Aug 2026filed 17 Aug 2026 | CVM Cel-Scioption or derivative · Biotechnology | SEC FORM 4 Code A | $3,000300,000 at $0.01 | filing |
| 30 Jun 2026filed 1 Jul 2026 | CVM Cel-SciBiotechnology | SEC FORM 4 Code A | $5,4005,192 at $1.04 | filing |
| 30 Jun 2026filed 1 Jul 2026 | CVM Cel-SciBiotechnology | SEC FORM 4 Code A | $5,4005,192 at $1.04 | filing |
| 14 May 2026filed 18 May 2026 | CVM Cel-SciBiotechnology | SEC FORM 4 Bought | $360K300,000 at $1.20 | filing |
| 14 May 2026filed 18 May 2026 | CVM Cel-SciBiotechnology | SEC FORM 4 Bought | $360K300,000 at $1.20 | filing |
| 13 May 2026filed 14 May 2026 | CVM Cel-SciBiotechnology | SEC FORM 4 Bought | $119K100,000 at $1.19 | filing |
| 13 May 2026filed 14 May 2026 | CVM Cel-SciBiotechnology | SEC FORM 4 Bought | $119K100,000 at $1.19 | filing |
| 31 Mar 2026filed 1 Apr 2026 | CVM Cel-SciBiotechnology | SEC FORM 4 Code A | $5,3991,682 at $3.21 | filing |
| 31 Mar 2026filed 1 Apr 2026 | CVM Cel-SciBiotechnology | SEC FORM 4 Code A | $5,3991,682 at $3.21 | filing |
| 22 Jan 2026filed 26 Jan 2026 | CVM Cel-SciBiotechnology | SEC FORM 4 Bought | $200K38,023 at $5.26 | filing |
| 22 Jan 2026filed 26 Jan 2026 | CVM Cel-SciBiotechnology | SEC FORM 4 Bought | $200K38,023 at $5.26 | filing |
| 31 Dec 2025filed 5 Jan 2026 | CVM Cel-SciBiotechnology | SEC FORM 4 Code A | $5,249998 at $5.26 | filing |
| 31 Dec 2025filed 5 Jan 2026 | CVM Cel-SciBiotechnology | SEC FORM 4 Code A | $5,249998 at $5.26 | filing |
| 4 Dec 2025filed 5 Dec 2025 | CVM Cel-SciBiotechnology | SEC FORM 4 Bought | $50K8,389 at $5.96 | filing |
| 30 Sep 2025filed 2 Oct 2025 | CVM Cel-SciBiotechnology | SEC FORM 4 Code A | $5,244570 at $9.20 | filing |
| 28 Jul 2025filed 29 Jul 2025 | CVM Cel-Scioption or derivative · Biotechnology | SEC FORM 4 Code A | $25025,000 at $0.01 | filing |
News
No headline names them, or the companies they trade most, lately.