Ambrose Kristen
Officer · VRTX
As of 2026-09-27, Ambrose Kristen has 27 Form 4 transactions on record across 1 company — 13 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.
Pattern in the record: open-market sales filed in February in multiple years since 2024 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
Reconstructed holdings
- Direct $6.1M
- Indirect $0
| VRTX | direct | 11,624 sh | $6.1M |
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 |
|---|---|---|---|---|---|---|---|
| 2026-02-26 | VRTX | Sale | 357 @ $483.36 | $173K | −5.1% of holding | 6,624 | Form 4 |
| 2026-02-25 | VRTX | Sale | 223 @ $486.35 | $108K | −3.1% of holding | 6,981 | Form 4 |
| 2026-02-18 | VRTX | Sale | 638 @ $473.68 | $302K | −7.6% of holding | 7,750 | Form 4 |
| 2026-02-17 | VRTX | Sale | 1,557 @ $489.46 | $762K | −15.7% of holding | 8,388 | Form 4 |
| 2026-02-11 | VRTX | Sale | 1,376 @ $460.43 | $634K | −12.0% of holding | 10,127 | Form 4 |
| 2025-02-25 | VRTX | Sale | 884 @ $480.95 | $425K | −8.9% of holding | 9,086 | Form 4 |
| 2025-02-18 | VRTX | Sale | 671 @ $455.06 | $305K | −5.9% of holding | 10,798 | Form 4 |
| 2025-02-11 | VRTX | Sale | 1,376 @ $459.83 | $633K | −12.1% of holding | 9,953 | Form 4 |
| 2024-04-02 | VRTX | Sale | 240 @ $419.00 | $101K | −3.1% of holding | 7,500 | Form 4 |
| 2024-02-26 | VRTX | Sale | 883 @ $425.70 | $376K | −10.0% of holding | 7,965 | Form 4 |
17 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-08-28 | VRTX | Award / grant | 5,000 | 11,624 | Form 4 |
| 2026-02-24 | VRTX | Withheld for tax | 546 | 7,204 | Form 4 |
| 2026-02-17 | VRTX | Withheld for tax | 598 | 9,945 | Form 4 |
| 2026-02-17 | VRTX | Award / grant | 1,809 | 10,543 | Form 4 |
| 2026-02-13 | VRTX | Withheld for tax | 1,393 | 8,734 | Form 4 |
| 2026-02-10 | VRTX | Withheld for tax | 592 | 11,503 | Form 4 |
| 2026-01-22 | VRTX | Award / grant | 1,300 | 12,095 | Form 4 |
| 2026-01-22 | VRTX | Award / grant | 2,950 | 10,795 | Form 4 |
| 2025-02-26 | VRTX | Withheld for tax | 1,241 | 7,845 | Form 4 |
| 2025-02-24 | VRTX | Withheld for tax | 828 | 9,970 | Form 4 |
| 2025-02-14 | VRTX | Withheld for tax | 564 | 11,469 | Form 4 |
| 2025-02-12 | VRTX | Award / grant | 2,080 | 12,033 | Form 4 |
| 2025-02-10 | VRTX | Withheld for tax | 591 | 11,329 | Form 4 |
| 2025-02-04 | VRTX | Award / grant | 1,854 | 11,920 | Form 4 |
| 2025-02-04 | VRTX | Award / grant | 2,566 | 10,066 | Form 4 |
| 2024-04-01 | VRTX | Withheld for tax | 225 | 7,740 | Form 4 |
| 2024-02-23 | VRTX | Withheld for tax | 828 | 8,848 | 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.