Chai Nelson
Director · CB, TMO
As of 2026-09-16, Chai Nelson has 11 Form 4 transactions on record across 2 companies — 4 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Reconstructed holdings
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2025-02-19 | TMO | Sale | 16 @ $528.09 | $8K | −0.1% of holding | 14,252 | Form 4 |
| 2024-12-09 | TMO | Purchase | 4 @ $535.93 | $2K | +0.0% of holding | 14,268 | Form 4 |
| 2024-11-07 | TMO | Purchase | 16 @ $555.89 | $9K | +0.1% of holding | 14,264 | Form 4 |
8 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-05-21 | CB | Withheld for tax | 193 | 1,797 | Form 4 |
| 2026-05-21 | CB | Award / grant | 681 | 1,990 | Form 4 |
| 2026-05-21 | CB | Award / grant | 681 | 1,990 | Form 4 |
| 2026-05-20 | TMO | Award / grant | 499 | 15,316 | Form 4 |
| 2025-05-21 | TMO | Award / grant | 565 | 14,817 | Form 4 |
| 2025-05-15 | CB | Withheld for tax | 180 | 1,309 | Form 4 |
| 2025-05-15 | CB | Award / grant | 771 | 1,489 | Form 4 |
| 2025-05-15 | CB | Award / grant | 771 | 1,489 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.