Gillis Steven insider trades
Gillis Steven has filed 14 Form 4s with the SEC that we hold, for CDAK (Director), VBIV (Director), Q32 Bio Inc. (FIXX) (Director) and Boundless Bio, Inc. (BOLD) (10% owner), among 7 companies in all. Across all of them we count 7 purchases worth $54.2M and 0 sales worth $0 reported on Form 4. None of these purchases or sales is dated in the last 12 months. The largest single trade was a purchase of 1,432,224 shares of MTSR worth $25.8M, dated 2025-02-03. The first filing on our record is dated 2022-01-31 and the latest 2026-07-06.
CDAK
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2022-09-13 | P, purchase reported on Form 4 | 5,000,000 | - | 2022-09-15 |
VBIV
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2023-07-10 | P, purchase reported on Form 4 | 609,090 | $1.0M | 2023-07-18 |
Q32 Bio Inc. (FIXX)
No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.
Boundless Bio, Inc. (BOLD)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2024-04-02 | P, purchase reported on Form 4 | 133,333 | $2.1M | 2024-04-04 |
| 2024-04-02 | P, purchase reported on Form 4 | 66,667 | $1.1M | 2024-04-04 |
MTSR
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2025-02-03 | P, purchase reported on Form 4 | 789,998 | $14.2M | 2025-02-03 |
| 2025-02-03 | P, purchase reported on Form 4 | 1,432,224 | $25.8M | 2025-02-03 |
Prime Medicine, Inc. (PRME)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2025-08-01 | P, purchase reported on Form 4 | 3,030,300 | $10.0M | 2025-08-01 |
Takeda Pharmaceutical Co LTD (TAK)
No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.
Counted from the Form 4 filings this reporting owner (SEC CIK 1229592) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
Privacy · Terms