Who
Steven A. Ledger
Chief Executive Officer
Company insider
Files Form 4 as: Chief Executive Officer, Serina Therapeutics; Director, Crossroads Systems; Director, Broadcast International; Chairman of the Board, Graphon Corp/de; Director, Acorn Energy.
In numbers
- Trades disclosed
- 19
- Buys
- 2
- Sells
- 0
- Bought
- $286K
- Sold
- $0
- Companies
- 5
- Companies where not an officer
- 3
- First trade
- 29 Jul 2010
- Last trade
- 26 May 2026
- Last filed
- 27 May 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 | |
|---|---|---|---|---|
| 26 May 2026filed 27 May 2026 | SER Serina TherapeuticsBiotechnology | SEC FORM 4 Code A | $19K10,100 at $1.93 | filing |
| 26 May 2026filed 27 May 2026 | SER Serina TherapeuticsBiotechnology | SEC FORM 4 Code A | $19K10,100 at $1.93 | filing |
| 21 May 2026filed 26 May 2026 | SER Serina Therapeuticsoption or derivative · Biotechnology | SEC FORM 4 Code A | —380,825 at $0.00 | filing |
| 21 May 2026filed 26 May 2026 | SER Serina Therapeuticsoption or derivative · Biotechnology | SEC FORM 4 Code A | —380,825 at $0.00 | filing |
| 3 Feb 2026filed 17 Feb 2026 | SER Serina Therapeuticsoption or derivative · Biotechnology | SEC FORM 4 Code A | —230,100 at $0.00 | filing |
| 3 Feb 2026filed 17 Feb 2026 | SER Serina Therapeuticsoption or derivative · Biotechnology | SEC FORM 4 Code A | —230,100 at $0.00 | filing |
| 28 Mar 2025filed 1 Apr 2025 | SER Serina TherapeuticsBiotechnology | SEC FORM 4 Code J | —95,730 at $0.00 | filing |
| 9 Sep 2024filed 11 Sep 2024 | SER Serina Therapeuticsoption or derivative · Biotechnology | SEC FORM 4 Code A | —376,388 at $0.00 | filing |
| 30 Apr 2013filed 2 May 2013 | Crossroads Systemsoption or derivative | SEC FORM 4 Code A | $7,6393,237 at $2.36 | filing |
| 21 Feb 2013filed 27 Feb 2013 | Broadcast International | SEC FORM 4 Code A | $16K200,000 at $0.08 | filing |
| 31 Dec 2012filed 27 Feb 2013 | Broadcast Internationaloption or derivative | SEC FORM 4 Code A | $3,00037,500 at $0.08 | filing |
| 20 Dec 2012filed 24 Jan 2013 | Graphon Corp/deoption or derivative | SEC FORM 4 Code A | —300,000 at $0.00 | filing |
| 30 Sep 2012filed 27 Feb 2013 | Broadcast Internationaloption or derivative | SEC FORM 4 Code A | $4,00021,053 at $0.19 | filing |
| 4 Apr 2012filed 5 Apr 2012 | Broadcast Internationaloption or derivative | SEC FORM 4 Code P | —72,000 at $0.00 | filing |
| 4 Apr 2012filed 5 Apr 2012 | Broadcast International | SEC FORM 4 Bought | $36K144,000 at $0.25 | filing |
| 1 Sep 2011filed 6 Sep 2011 | Graphon Corp/deoption or derivative | SEC FORM 4 Code P | —625,000 at $0.00 | filing |
| 1 Sep 2011filed 6 Sep 2011 | Graphon Corp/de | SEC FORM 4 Bought | $250K1,250,000 at $0.20 | filing |
| 9 Aug 2011filed 16 Aug 2011 | Graphon Corp/deoption or derivative | SEC FORM 4 Code A | —400,000 at $0.00 | filing |
| 29 Jul 2010filed 18 Aug 2010 | ACFN Acorn Energyoption or derivative · Professional Services | SEC FORM 4 Code A | —25,000 at $0.00 | filing |
News
No headline names them, or the companies they trade most, lately.