Mary Thistle
CIK 1317917 · Chief Operating Officer · last filed 2026-07-21
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Loading insider history…
Disclosed Exposure
$570
Companies
8
Total Filings
33
Lifetime Open-Market Net
$0
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| QTTB | Director | — | $15.71 | — | $0 | 5 | 2026-07-21 |
| CGEM | Director | — | $17.47 | — | $0 | 2 | 2026-06-18 |
| TRDA | Director | — | $5.83 | — | $0 | 6 | 2026-06-12 |
| Vigil Neuroscience, Inc. (VIGL) Delisted | Director | 0 | $8.05 | $0 | $0 | 7 | 2025-08-05 |
| Q32 Bio Inc. (FIXX) Delisted | Director | — | $16.82 | — | $0 | 6 | 2023-06-15 |
| TCRT | Director | 300 | $1.90 | $570 | $0 | 3 | 2023-06-08 |
| Alaunos Therapeutics, Inc. (ZIOP) Delisted | Director | 5,000 | $0.87 | $4.3K | $0 | 1 | 2021-05-06 |
| Dimension Therapeutics, Inc. (DMTX) Delisted | Chief Operating Officer | — | — | — | $0 | 3 | 2017-11-07 |
Recent Filings · Page 2 of 4
33 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-06-14 | TRDA | Grant (A) | — | $0 | EDGAR |
| 2024-06-07 | Vigil Neuroscience, Inc. (VIGL) Delisted | Grant (A) | — | $0 | EDGAR |
| 2024-05-07 | Vigil Neuroscience, Inc. (VIGL) Delisted | Mixed | — | $0 | EDGAR |
| 2024-03-27 | QTTB | Grant (A) | — | $0 | EDGAR |
| 2023-06-15 | Q32 Bio Inc. (FIXX) Delisted | Grant (A) | — | $0 | EDGAR |
| 2023-06-12 | TRDA | Grant (A) | — | $0 | EDGAR |
| 2023-06-09 | Vigil Neuroscience, Inc. (VIGL) Delisted | Grant (A) | — | $0 | EDGAR |
| 2023-06-08 | TCRT | Grant (A) | — | $0 | EDGAR |
| 2022-06-24 | TCRT | Grant (A) | +40,000 | $0 | EDGAR |
| 2022-06-24 | TCRT | Grant (A) | +40,000 | $0 | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.