Who
Charles S. Berkman
Chief Legal Officer
Company insider
Files Form 4 as: Chief Legal Officer, OmniAb; SVP, Gen. Counsel & Secretary, Ligand Pharmaceuticals; CLO & Secretary, OmniAb Operations.
In numbers
- Trades disclosed
- 296
- Buys
- 4
- Sells
- 26
- Bought
- $41K
- Sold
- $21.7M
- Companies
- 3
- Companies where not an officer
- 0
- First trade
- 30 Apr 2007
- Last trade
- 7 Apr 2026
- Last filed
- 7 Apr 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 | |
|---|---|---|---|---|
| 7 Apr 2026filed 7 Apr 2026 | OABI OmniAbLife-science tools | SEC FORM 4 Code M | —13,542 at $0.00 | filing |
| 7 Apr 2026filed 7 Apr 2026 | OABI OmniAbLife-science tools | SEC FORM 4 Sold | $11K7,157 at $1.49 | filing |
| 7 Apr 2026filed 7 Apr 2026 | OABI OmniAboption or derivative · Life-science tools | SEC FORM 4 Code M | —13,542 at $0.00 | filing |
| 7 Apr 2026filed 7 Apr 2026 | OABI OmniAboption or derivative · Life-science tools | SEC FORM 4 Code M | —13,542 at $0.00 | filing |
| 7 Apr 2026filed 7 Apr 2026 | OABI OmniAbLife-science tools | SEC FORM 4 Code M | —13,542 at $0.00 | filing |
| 7 Apr 2026filed 7 Apr 2026 | OABI OmniAbLife-science tools | SEC FORM 4 Sold | $11K7,157 at $1.49 | filing |
| 18 Feb 2026filed 18 Feb 2026 | OABI OmniAbLife-science tools | SEC FORM 4 Code M | —18,750 at $0.00 | filing |
| 18 Feb 2026filed 18 Feb 2026 | OABI OmniAbLife-science tools | SEC FORM 4 Sold | $17K9,673 at $1.71 | filing |
| 18 Feb 2026filed 18 Feb 2026 | OABI OmniAboption or derivative · Life-science tools | SEC FORM 4 Code M | —18,750 at $0.00 | filing |
| 18 Feb 2026filed 18 Feb 2026 | OABI OmniAboption or derivative · Life-science tools | SEC FORM 4 Code M | —18,750 at $0.00 | filing |
| 18 Feb 2026filed 18 Feb 2026 | OABI OmniAboption or derivative · Life-science tools | SEC FORM 4 Code A | —60,000 at $0.00 | filing |
| 18 Feb 2026filed 18 Feb 2026 | OABI OmniAboption or derivative · Life-science tools | SEC FORM 4 Code A | —600,000 at $0.00 | filing |
| 18 Feb 2026filed 18 Feb 2026 | OABI OmniAboption or derivative · Life-science tools | SEC FORM 4 Code A | —60,000 at $0.00 | filing |
| 18 Feb 2026filed 18 Feb 2026 | OABI OmniAboption or derivative · Life-science tools | SEC FORM 4 Code A | —600,000 at $0.00 | filing |
| 18 Feb 2026filed 18 Feb 2026 | OABI OmniAbLife-science tools | SEC FORM 4 Code M | —18,750 at $0.00 | filing |
| 18 Feb 2026filed 18 Feb 2026 | OABI OmniAbLife-science tools | SEC FORM 4 Sold | $17K9,673 at $1.71 | filing |
| 17 Feb 2026filed 17 Feb 2026 | OABI OmniAbLife-science tools | SEC FORM 4 Sold | $12K6,990 at $1.70 | filing |
| 17 Feb 2026filed 17 Feb 2026 | OABI OmniAbLife-science tools | SEC FORM 4 Sold | $12K6,990 at $1.70 | filing |
| 16 Feb 2026filed 17 Feb 2026 | OABI OmniAbLife-science tools | SEC FORM 4 Code M | —13,542 at $0.00 | filing |
| 16 Feb 2026filed 17 Feb 2026 | OABI OmniAboption or derivative · Life-science tools | SEC FORM 4 Code M | —13,542 at $0.00 | filing |
News
No headline names them, or the companies they trade most, lately.