Saxonov Serge
Director · Officer · TXG
As of 2026-09-27, Saxonov Serge has 53 Form 4 transactions on record across 1 company — 29 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 August in multiple years since 2024 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
Reconstructed holdings
- Direct $90.0M
- Indirect $0
| TXG | direct | 1,050,249 sh | $90.0M |
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 |
|---|---|---|---|---|---|---|---|
| 2026-09-22 | TXG | Sale | 9,900 @ $81.83 | $810K | −0.9% of holding | 1,053,049 | Form 4 |
| 2026-09-22 | TXG | Sale | 9,300 @ $80.90 | $752K | −0.9% of holding | 1,062,949 | Form 4 |
| 2026-09-22 | TXG | Sale | 2,800 @ $82.36 | $231K | −0.3% of holding | 1,050,249 | Form 4 |
| 2026-09-22 | TXG | Sale | 2,000 @ $79.62 | $159K | −0.2% of holding | 1,072,249 | Form 4 |
| 2026-09-22 | TXG | Sale | 1,000 @ $78.23 | $78K | −0.1% of holding | 1,074,249 | Form 4 |
| 2026-08-26 | TXG | Sale | 6,494 @ $63.98 | $415K | −0.6% of holding | 1,075,841 | Form 4 |
| 2026-08-26 | TXG | Sale | 3,500 @ $63.02 | $221K | −0.3% of holding | 1,082,335 | Form 4 |
| 2026-08-26 | TXG | Sale | 492 @ $64.75 | $32K | −0.0% of holding | 1,075,349 | Form 4 |
| 2026-08-24 | TXG | Sale | 18,545 @ $63.02 | $1.2M | −1.7% of holding | 1,085,835 | Form 4 |
| 2026-06-22 | TXG | Sale | 9,821 @ $35.32 | $347K | −0.9% of holding | 1,110,041 | Form 4 |
| 2026-06-22 | TXG | Sale | 9,991 @ $34.28 | $343K | −0.9% of holding | 1,119,862 | Form 4 |
| 2026-06-22 | TXG | Sale | 8,527 @ $33.29 | $284K | −0.7% of holding | 1,129,853 | Form 4 |
| 2026-06-22 | TXG | Sale | 1,661 @ $36.16 | $60K | −0.1% of holding | 1,108,380 | Form 4 |
| 2026-05-26 | TXG | Sale | 10,718 @ $24.71 | $265K | −0.9% of holding | 1,138,380 | Form 4 |
| 2026-05-22 | TXG | Sale | 18,175 @ $24.44 | $444K | −1.6% of holding | 1,149,098 | Form 4 |
| 2026-04-14 | TXG | Sale | 5,000 @ $24.56 | $123K | −0.4% of holding | 1,167,273 | Form 4 |
| 2026-03-24 | TXG | Sale | 5,000 @ $19.52 | $98K | −0.4% of holding | 1,172,273 | Form 4 |
| 2026-03-23 | TXG | Sale | 10,000 @ $19.13 | $191K | −0.8% of holding | 1,177,273 | Form 4 |
| 2026-03-02 | TXG | Sale | 14,292 @ $22.67 | $324K | −1.2% of holding | 1,205,527 | Form 4 |
| 2026-03-02 | TXG | Sale | 1,860 @ $23.18 | $43K | −0.2% of holding | 1,203,667 | Form 4 |
| 2026-02-23 | TXG | Sale | 9,632 @ $18.58 | $179K | −0.9% of holding | 1,061,924 | Form 4 |
| 2025-11-24 | TXG | Sale | 13,261 @ $19.00 | $252K | −1.3% of holding | 1,021,556 | Form 4 |
| 2025-08-22 | TXG | Sale | 9,348 @ $13.79 | $129K | −1.0% of holding | 945,892 | Form 4 |
| 2025-05-22 | TXG | Sale | 9,343 @ $8.30 | $78K | −0.9% of holding | 1,083,625 | Form 4 |
| 2025-02-28 | TXG | Sale | 7,942 @ $10.63 | $84K | −0.9% of holding | 871,540 | Form 4 |
| 2025-02-24 | TXG | Sale | 5,092 @ $11.07 | $56K | −0.6% of holding | 879,482 | Form 4 |
| 2024-11-22 | TXG | Sale | 6,693 @ $13.69 | $92K | −0.8% of holding | 872,574 | Form 4 |
| 2024-08-22 | TXG | Sale | 6,749 @ $22.53 | $152K | −0.8% of holding | 882,467 | Form 4 |
| 2024-05-22 | TXG | Sale | 4,877 @ $24.30 | $119K | −0.5% of holding | 889,641 | Form 4 |
| 2024-03-04 | TXG | Sale | 4,660 @ $44.00 | $205K | −0.5% of holding | 842,900 | Form 4 |
| 2024-02-22 | TXG | Sale | 2,821 @ $46.34 | $131K | −0.3% of holding | 847,560 | Form 4 |
| 2024-02-15 | TXG | Sale | 3,300 @ $48.58 | $160K | −0.4% of holding | 852,081 | Form 4 |
| 2024-02-15 | TXG | Sale | 1,700 @ $49.43 | $84K | −0.2% of holding | 850,381 | Form 4 |
20 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-09-01 | TXG | Gift | 100 | 1,075,249 | Form 4 |
| 2026-08-20 | TXG | Gift | 4,000 | 1,104,380 | Form 4 |
| 2026-03-03 | TXG | Gift | 2,750 | 1,200,917 | Form 4 |
| 2026-02-26 | TXG | Award / grant | 157,895 | 1,219,819 | Form 4 |
| 2026-01-05 | TXG | Option exercise | 50,000 | 1,071,556 | Form 4 |
| 2026-01-05 | TXG | Option exercise | 17,463 | 0 | Form 4 |
| 2026-01-05 | TXG | Option exercise | 32,537 | 173,600 | Form 4 |
| 2025-09-12 | TXG | Gift | 900 | 1,034,817 | Form 4 |
| 2025-06-09 | TXG | Gift | 1,000 | 955,240 | Form 4 |
| 2025-05-29 | TXG | Gift | 3,000 | 1,080,625 | Form 4 |
| 2025-03-17 | TXG | Award / grant | 171,428 | 1,092,968 | Form 4 |
| 2025-03-04 | TXG | Option exercise | 50,000 | 921,540 | Form 4 |
| 2025-03-04 | TXG | Option exercise | 50,000 | 17,463 | Form 4 |
| 2024-12-23 | TXG | Option exercise | 12,000 | 884,574 | Form 4 |
| 2024-12-23 | TXG | Option exercise | 12,000 | 67,463 | Form 4 |
| 2024-11-21 | TXG | Gift | 1,850 | 879,267 | Form 4 |
| 2024-11-14 | TXG | Gift | 1,350 | 881,117 | Form 4 |
| 2024-05-29 | TXG | Gift | 425 | 889,216 | Form 4 |
| 2024-03-21 | TXG | Award / grant | 88,854 | 894,518 | Form 4 |
| 2024-03-14 | TXG | Gift | 1,086 | 805,664 | 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.