Chai Nelson
SEC insider (Form 3/4/5 filer). CIK 0001299914. Director at Chubb Ltd (CB) and 1 other issuer. 9 reported Form 4/5 transactions since Sep 2024; latest on May 21, 2026. Located in WALTHAM, MA.
Companies Chai Nelson has filed insider reports for
- Chubb Ltd (CB): Director
- THERMO FISHER SCIENTIFIC INC. (TMO): Director
Chai Nelson
CIK: 0001299914
Transaction Breakdown
Open Market Buys (P)2 (22.2%)
High conviction signal
Open Market Sales (S)1 (11.1%)
Position reduction
Option Exercises (M)0 (0.0%)
Derivative conversions
Awards (A)4 (44.4%)
Compensation grants
Other (G, F, J, C, D, …)2 (22.2%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (9 total)
- May 21, 2026CB
Chubb Ltd
Tax PaymentDirect193 shares at avg. $330.26$64K - May 21, 2026CB
Chubb Ltd
AwardDirect681 shares- - May 20, 2026TMO
THERMO FISHER SCIENTIFIC INC.
AwardDirect499 shares- - May 21, 2025TMO
THERMO FISHER SCIENTIFIC INC.
AwardDirect565 shares- - May 15, 2025CB
Chubb Ltd
AwardDirect771 shares- - May 15, 2025CB
Chubb Ltd
Tax PaymentDirect180 shares at avg. $292.05$53K - Feb 19, 2025TMO
THERMO FISHER SCIENTIFIC INC.
SaleDirect16 shares at avg. $528.09$8K - Dec 9, 2024TMO
THERMO FISHER SCIENTIFIC INC.
PurchaseDirect4 shares at avg. $535.93$2K - Nov 7, 2024TMO
THERMO FISHER SCIENTIFIC INC.
PurchaseDirect16 shares at avg. $555.89$9K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| May 21, 2026 |  CB Chubb Ltd | Tax Payment | 193 | $330.26 | $63,740 | Direct |
| May 21, 2026 | CB Chubb Ltd | Award | 681 | - | $0 | Direct |
| May 20, 2026 |  TMO THERMO FISHER SCIENTIFIC INC. | Award | 499 | - | $0 | Direct |
| May 21, 2025 | TMO THERMO FISHER SCIENTIFIC INC. | Award | 565 | - | - | Direct |
| May 15, 2025 | CB Chubb Ltd | Award | 771 | - | - | Direct |
| May 15, 2025 | CB Chubb Ltd | Tax Payment | 180 | $292.05 | $52,569 | Direct |
| Feb 19, 2025 | TMO THERMO FISHER SCIENTIFIC INC. | Sale | 16 | $528.09 | $8,449 | Direct |
| Dec 9, 2024 | TMO THERMO FISHER SCIENTIFIC INC. | Purchase | 4 | $535.93 | $2,144 | Direct |
| Nov 7, 2024 | TMO THERMO FISHER SCIENTIFIC INC. | Purchase | 16 | $555.89 | $8,894 | Direct |
1-9 of 9 transactions