Thompson Peter A.
Director · Ten-percent owner · SION, SPRY, CRVS, EWTX
As of 2026-09-16, Thompson Peter A. has 53 Form 4 transactions on record across 4 companies — 39 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 June in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
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 |
|---|---|---|---|---|---|---|---|
| 2026-07-07 | SION | Sale | 85,918 @ $44.86 | $3.9M | −3.4% of holding | 2,469,959 | Form 4 |
| 2026-06-30 | SION | Sale | 115,844 @ $45.50 | $5.3M | −4.3% of holding | 2,555,877 | Form 4 |
| 2026-05-27 | SION | Sale | 101 @ $44.49 | $4K | −0.0% of holding | 2,671,721 | Form 4 |
| 2026-05-11 | SION | Sale | 184,639 @ $46.22 | $8.5M | −6.5% of holding | 2,671,822 | Form 4 |
| 2026-05-08 | SION | Sale | 59,767 @ $44.58 | $2.7M | −2.0% of holding | 2,856,461 | Form 4 |
| 2026-05-07 | SION | Sale | 48,546 @ $44.61 | $2.2M | −1.6% of holding | 2,916,228 | Form 4 |
| 2026-04-18 | SION | Sale | 2,948 @ $44.52 | $131K | −0.1% of holding | 2,964,774 | Form 4 |
| 2026-04-17 | SION | Sale | 52,397 @ $44.68 | $2.3M | −1.7% of holding | 2,967,722 | Form 4 |
| 2026-04-16 | SION | Sale | 226,906 @ $45.34 | $10.3M | −7.0% of holding | 3,020,119 | Form 4 |
| 2026-04-15 | SION | Sale | 235,863 @ $44.64 | $10.5M | −6.8% of holding | 3,247,025 | Form 4 |
| 2026-04-14 | SION | Sale | 47,814 @ $44.51 | $2.1M | −1.4% of holding | 3,482,888 | Form 4 |
| 2026-02-03 | SION | Sale | 29,063 @ $44.58 | $1.3M | −0.8% of holding | 3,530,702 | Form 4 |
| 2026-02-02 | SION | Sale | 1,890 @ $44.57 | $84K | −0.1% of holding | 3,559,765 | Form 4 |
| 2025-12-24 | SION | Sale | 33,356 @ $44.55 | $1.5M | −0.9% of holding | 3,561,655 | Form 4 |
| 2025-12-19 | SION | Sale | 875 @ $44.49 | $39K | −0.0% of holding | 3,595,011 | Form 4 |
| 2025-12-18 | SION | Sale | 100 @ $44.49 | $4K | −0.0% of holding | 3,595,886 | Form 4 |
| 2025-12-17 | SION | Sale | 900 @ $44.50 | $40K | −0.0% of holding | 3,595,986 | Form 4 |
| 2025-11-26 | SION | Sale | 1,600 @ $44.49 | $71K | −0.0% of holding | 3,596,886 | Form 4 |
| 2025-11-25 | SION | Sale | 11,890 @ $44.60 | $530K | −0.3% of holding | 3,598,486 | Form 4 |
| 2025-11-24 | SION | Sale | 94,583 @ $44.54 | $4.2M | −2.6% of holding | 3,610,376 | Form 4 |
| 2025-06-27 | CRVS | Sale | 1,176,332 @ $4.16 | $4.9M | −14.1% of holding | 7,165,006 | Form 4 |
| 2025-04-03 | EWTX | Purchase | 372,578 @ $20.13 | $7.5M | +2.6% of holding | 14,809,075 | Form 4 |
| 2025-04-03 | EWTX | Purchase | 124,193 @ $20.13 | $2.5M | +38.9% of holding | 443,792 | Form 4 |
| 2025-02-10 | SION | Purchase | 550,000 @ $18.00 | $9.9M | +17.4% of holding | 3,704,959 | Form 4 |
29 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-06-24 | SPRY | Award / grant | 30,000 | 30,000 | Form 4 |
| 2026-06-17 | SION | Award / grant | 17,340 | 17,340 | Form 4 |
| 2026-06-11 | CRVS | Award / grant | 15,000 | 15,000 | Form 4 |
| 2026-06-05 | EWTX | Award / grant | 16,377 | 16,377 | Form 4 |
| 2026-01-28 | CRVS | Option exercise | 30,000 | 30,000 | Form 4 |
| 2026-01-28 | CRVS | Option exercise | 15,000 | 60,000 | Form 4 |
| 2026-01-28 | CRVS | Option exercise | 15,000 | 45,000 | Form 4 |
| 2026-01-28 | CRVS | Option exercise | 15,000 | 75,000 | Form 4 |
| 2026-01-28 | CRVS | Option exercise | 15,000 | 105,000 | Form 4 |
| 2026-01-28 | CRVS | Option exercise | 15,000 | 120,000 | Form 4 |
| 2026-01-28 | CRVS | Option exercise | 15,000 | 135,000 | Form 4 |
| 2026-01-28 | CRVS | Option exercise | 15,000 | 180,000 | Form 4 |
| 2026-01-28 | CRVS | Option exercise | 15,000 | 210,000 | Form 4 |
| 2026-01-28 | CRVS | Option exercise | 15,000 | 90,000 | Form 4 |
| 2026-01-28 | CRVS | Option exercise | 15,000 | 195,000 | Form 4 |
| 2026-01-28 | CRVS | Option exercise | 15,000 | 150,000 | Form 4 |
| 2026-01-28 | CRVS | Option exercise | 15,000 | 165,000 | Form 4 |
| 2026-01-28 | CRVS | Option exercise | 30,000 | 0 | Form 4 |
| 2026-01-28 | CRVS | Option exercise | 15,000 | 0 | Form 4 |
| 2025-06-27 | CRVS | Exercise | 1,397,684 | 8,341,338 | Form 4 |
| 2025-06-27 | CRVS | Exercise | 1,397,684 | 0 | Form 4 |
| 2025-06-25 | SPRY | Award / grant | 30,000 | 30,000 | Form 4 |
| 2025-06-16 | EWTX | Award / grant | 30,000 | 30,000 | Form 4 |
| 2025-06-12 | SION | Award / grant | 19,959 | 19,959 | Form 4 |
| 2025-06-12 | CRVS | Award / grant | 15,000 | 15,000 | Form 4 |
| 2025-02-10 | SION | Conversion | 2,048,760 | 0 | Form 4 |
| 2025-02-10 | SION | Conversion | 2,560,951 | 0 | Form 4 |
| 2025-02-10 | SION | Conversion | 3,154,959 | 3,154,959 | Form 4 |
| 2025-02-10 | SION | Conversion | 3,154,959 | 3,154,959 | 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.