Chai Nelson (CIK 1299914) reported 7 SEC Form 4 insider transactions across 2 companies over the past 18 months (most recent 2026-05-22). Recent activity: Buy TMO (499 shares), Buy TMO (565 shares), Buy CB (771 shares), Sell CB (180 shares), Buy TMO (16 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-22 | THERMO FISHER SCIENTIFIC INC. (TMO) | Director | Buy | 499 | $0 |
| 2025-05-22 | THERMO FISHER SCIENTIFIC INC. (TMO) | Director | Buy | 565 | $0 |
| 2025-05-16 | Chubb Ltd (CB) | Director | Buy | 771 | $0 |
| 2025-05-16 | Chubb Ltd (CB) | Director | Sell | 180 | $52,569 |
| 2025-02-21 | THERMO FISHER SCIENTIFIC INC. (TMO) | Director | Buy | 16 | $8,894 |
| 2025-02-21 | THERMO FISHER SCIENTIFIC INC. (TMO) | Director | Buy | 4 | $2,144 |
| 2025-02-21 | THERMO FISHER SCIENTIFIC INC. (TMO) | Director | Sell | 16 | $8,449 |
Source: SEC Form 4 filings · as of 2026-05-22