SEC Form 4 · accession 0001780660-26-000015
Adaptive Biotechnologies Corp · ADPT
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Francis Lo
Officer — Chief People Officer
Period of report
Jun 4, 2026
Accepted (ET)
Jun 8, 2026 · 8:29 pm EDT
Rule 10b5-1 plan
yes — trade under a plan
Issuer CIK
0001478320
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Jun 4, 2026 | M | 5,792 | $12.14 | A | 276,946 | D | |
| Common Stock | Jun 4, 2026 | M | 2,009 | $8.46 | A | 278,955 | D | |
| Common Stock | Jun 4, 2026 | M | 2,344 | $3.99 | A | 281,299 | D | |
| Common Stock | Jun 4, 2026 | M | 9,376 | $8.12 | A | 290,675 | D | |
| Common Stock | Jun 4, 2026 | S | 39,741 | $17.49 | D | 250,934 | D | |
| Common Stock | holding | — | — | — | 2,500 | I | By You Jin Lee (spouse) |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stock Option (right to buy)F2 | $12.14 | Jun 4, 2026 | M | 5,792 | D | — | Mar 4, 2032 | Common Stock | 5,792 | 171,823 | D |
| Stock Option (right to buy)F3 | $8.46 | Jun 4, 2026 | M | 2,009 | D | — | Mar 6, 2033 | Common Stock | 2,009 | 85,065 | D |
| Stock Option (right to buy)F4 | $3.99 | Jun 4, 2026 | M | 2,344 | D | — | Mar 4, 2034 | Common Stock | 2,344 | 85,953 | D |
| Stock Option (right to buy)F5 | $8.12 | Jun 4, 2026 | M | 9,376 | D | — | Mar 4, 2035 | Common Stock | 9,376 | 140,648 | D |
Explanation of responses
- F1The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 15, 2025.
- F2The option is fully vested and exercisable.
- F3The options vested with respect to 1/4 of such shares on March 4, 2024, with 1/48 of such shares vesting thereafter at the end of each full month of continuous service until fully vested.
- F4The options vested with respect to 1/4 of such shares on March 4, 2025, with 1/48 of such shares vesting thereafter at the end of each full month of continuous service until fully vested.
- F5The options vested with respect to 1/4 of such shares on March 4, 2026, with 1/48 of such shares vesting thereafter at the end of each full month of continuous service until fully vested.