Formela Jean Francois insider trades
Formela Jean Francois has filed 20 Form 4s with the SEC that we hold, for Korro Bio, Inc. (KRRO) (Director), ImageneBio, Inc. (IKNA) (Director), Intellia Therapeutics, Inc. (NTLA) (Director) and Spero Therapeutics, Inc. (SPRO) (Director), among 5 companies in all. Across all of them we count 1 purchase worth $2.0M and 28 sales worth $83.6M reported on Form 4. In the last 12 months: 0 purchases ($0) and 24 sales ($5.2M). The largest single trade was a sale of 2,055,063 shares of TBIO worth $78.1M, dated 2021-09-14. Of 8 sales filed since we began reading the 10b5-1 checkbox, 8 (100%) were marked as made under a 10b5-1 trading plan. The first filing on our record is dated 2021-08-18 and the latest 2026-09-15.
Korro Bio, Inc. (KRRO)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2026-05-28 | S, sale reported on Form 4 | 2,441 | $34.1K | 2026-06-01 |
| 2026-05-28 | S, sale reported on Form 4 | 419 | $5.8K | 2026-06-01 |
| 2026-06-22 | S, sale reported on Form 4 | 3,382 | $47.2K | 2026-06-24 |
| 2026-06-22 | S, sale reported on Form 4 | 580 | $8.1K | 2026-06-24 |
| 2026-06-23 | S, sale reported on Form 4 | 101,579 | $1.4M | 2026-06-24 |
| 2026-06-23 | S, sale reported on Form 4 | 17,426 | $248.3K | 2026-06-24 |
| 2026-06-24 | S, sale reported on Form 4 | 40,679 | $593.9K | 2026-06-24 |
| 2026-06-24 | S, sale reported on Form 4 | 114 | $1.7K | 2026-06-24 |
| 2026-06-24 | S, sale reported on Form 4 | 666 | $10.0K | 2026-06-24 |
| 2026-06-24 | S, sale reported on Form 4 | 6,979 | $101.9K | 2026-06-24 |
| 2026-07-02 | S, sale reported on Form 4 | 85,955 | $1.2M | 2026-07-07 |
| 2026-07-02 | S, sale reported on Form 4 | 14,745 | $206.9K | 2026-07-07 |
| 2026-07-06 | S, sale reported on Form 4 | 817 | $11.4K | 2026-07-07 |
| 2026-07-06 | S, sale reported on Form 4 | 8,506 | $118.7K | 2026-07-07 |
| 2026-08-11 | S, sale reported on Form 4 | 1,775 | $24.8K | 2026-08-13 |
| 2026-08-11 | S, sale reported on Form 4 | 368 | $5.1K | 2026-08-13 |
| 2026-08-19 | S, sale reported on Form 4 | 23,584 | $330.2K | 2026-08-21 |
| 2026-08-19 | S, sale reported on Form 4 | 4,884 | $68.4K | 2026-08-21 |
| 2026-08-26 | S, sale reported on Form 4 | 249 | $3.5K | 2026-08-28 |
| 2026-08-26 | S, sale reported on Form 4 | 51 | $712 | 2026-08-28 |
| 2026-09-11 | S, sale reported on Form 4 | 8,450 | $118.2K | 2026-09-15 |
| 2026-09-11 | S, sale reported on Form 4 | 1,750 | $24.5K | 2026-09-15 |
| 2026-09-14 | S, sale reported on Form 4 | 31,888 | $450.3K | 2026-09-15 |
| 2026-09-14 | S, sale reported on Form 4 | 6,602 | $93.2K | 2026-09-15 |
ImageneBio, Inc. (IKNA)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2021-03-30 | P, purchase reported on Form 4 | 125,000 | $2.0M | 2021-12-14 |
| 2021-12-10 | S, sale reported on Form 4 | 11,989 | $180.2K | 2021-12-14 |
| 2021-12-13 | S, sale reported on Form 4 | 8,330 | $122.0K | 2021-12-14 |
| 2021-12-14 | S, sale reported on Form 4 | 5,959 | $83.4K | 2021-12-14 |
Intellia Therapeutics, Inc. (NTLA)
No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.
Spero Therapeutics, Inc. (SPRO)
No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.
TBIO
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2021-09-14 | S, sale reported on Form 4 | 2,055,063 | $78.1M | 2021-09-14 |
Counted from the Form 4 filings this reporting owner (SEC CIK 1030575) 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.
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