Harlan S Robins insider trades: Adaptive Biotechnologies (ADPT) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Harlan reports to the SEC
Open-market buys and sales
42 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jul 21, 2026 | ADPT | ↓ Sell | 492,400 | $21.89 | $10.8M | Direct | Jul 23, 2026 (2d) |
| Jul 2, 2026 | ADPT | ↓ Sell | 386,240 | $22.01 | $8.5M | Direct | Jul 7, 2026 (5d) |
| Jun 16, 2026 | ADPT | ↓ Sell | 106,160 | $17.41 | $1.8M | Direct | Jun 17, 2026 (1d) |
| Apr 8, 2026 | ADPT | ↓ Sell | 10,000 | $14.85 | $149K | Direct | Apr 10, 2026 (2d) |
| Mar 11, 2026 | ADPT | ↓ Sell | 470,266 | $13.17 | $6.2M | Direct | Mar 13, 2026 (2d) |
| Mar 3, 2026 | ADPT | ↓ Sell | 24,233 | $16.19 | $392K | Direct | Mar 4, 2026 (1d) |
| Feb 3, 2026 | ADPT | ↓ Sell | 42,788 | $18.68 | $799K | Direct | Feb 4, 2026 (1d) |
| Jan 6, 2026 | ADPT | ↓ Sell | 10,000 | $16.44 | $164K | Direct | Jan 8, 2026 (2d) |
| Dec 4, 2025 | ADPT | ↓ Sell | 37,212 | $18.07 | $673K | Direct | Dec 5, 2025 (1d) |
| Nov 10, 2025 | ADPT | ↓ Sell | 10,000 | $14.82 | $148K | Direct | Nov 12, 2025 (2d) |
| May 1, 2025 | ADPT | ↓ Sell | 68,412 | $7.35 | $503K | Direct | May 5, 2025 (4d) |
| Mar 24, 2025 | ADPT | ↓ Sell | 1,698 | $9.00 | $15K | Direct | Mar 26, 2025 (2d) |
| Mar 5, 2025 | ADPT | ↓ Sell | 96,656 | $6.99 | $675K | Direct | Mar 6, 2025 (1d) |
| Mar 7, 2022 | ADPT | ↓ Sell | 4,517 | $12.01 | $54K | Direct | Mar 8, 2022 (1d) |
| Nov 18, 2021 | ADPT | ↓ Sell | 4,000 | $32.00 | $128K | Direct | Nov 19, 2021 (1d) |
| Oct 21, 2021 | ADPT | ↓ Sell | 11,200 | $33.71 | $378K | Direct | Oct 21, 2021 (0d) |
| Oct 8, 2021 | ADPT | ↓ Sell | 11,685 | $32.95 | $385K | Direct | Oct 8, 2021 (0d) |
| Sep 15, 2021 | ADPT | ↓ Sell | 11,685 | $36.98 | $432K | Direct | Sep 15, 2021 (0d) |
| Aug 27, 2021 | ADPT | ↓ Sell | 11,685 | $34.25 | $400K | Direct | Aug 27, 2021 (0d) |
| Jul 21, 2021 | ADPT | ↓ Sell | 11,685 | $37.47 | $438K | Direct | Jul 21, 2021 (0d) |
| Jun 11, 2021 | ADPT | ↓ Sell | 11,685 | $37.32 | $436K | Direct | Jun 11, 2021 (0d) |
| May 6, 2021 | ADPT | ↓ Sell | 7,090 | $35.58 | $252K | Direct | May 7, 2021 (1d) |
| May 4, 2021 | ADPT | ↓ Sell | 3,895 | $36.14 | $141K | Direct | May 6, 2021 (2d) |
| Apr 22, 2021 | ADPT | ↓ Sell | 27,265 | $41.56 | $1.1M | Direct | Apr 22, 2021 (0d) |
| Mar 25, 2021 | ADPT | ↓ Sell | 19,475 | $40.36 | $786K | Direct | Mar 25, 2021 (0d) |
| Feb 3, 2021 | ADPT | ↓ Sell | 7,790 | $59.58 | $464K | Direct | Feb 5, 2021 (2d) |
| Feb 2, 2021 | ADPT | ↓ Sell | 15,580 | $57.74 | $900K | Direct | Feb 3, 2021 (1d) |
| Jan 21, 2021 | ADPT | ↓ Sell | 23,370 | $66.82 | $1.6M | Direct | Jan 25, 2021 (4d) |
| Jan 20, 2021 | ADPT | ↓ Sell | 100,000 | $67.60 | $6.8M | Direct | Jan 21, 2021 (1d) |
| Nov 6, 2020 | ADPT | ↓ Sell | 33,300 | $50.70 | $1.7M | Direct | Nov 6, 2020 (0d) |
| Oct 16, 2020 | ADPT | ↓ Sell | 11,100 | $51.79 | $575K | Direct | Oct 20, 2020 (4d) |
| Oct 15, 2020 | ADPT | ↓ Sell | 22,200 | $51.86 | $1.2M | Direct | Oct 16, 2020 (1d) |
| Sep 24, 2020 | ADPT | ↓ Sell | 33,300 | $47.61 | $1.6M | Direct | Sep 24, 2020 (0d) |
| Aug 21, 2020 | ADPT | ↓ Sell | 33,300 | $42.84 | $1.4M | Direct | Aug 24, 2020 (3d) |
| Jul 17, 2020 | ADPT | ↓ Sell | 33,300 | $39.58 | $1.3M | Direct | Jul 17, 2020 (0d) |
| Jun 25, 2020 | ADPT | ↓ Sell | 33,300 | $46.54 | $1.5M | Direct | Jun 25, 2020 (0d) |
| May 20, 2020 | ADPT | ↓ Sell | 70,000 | $40.28 | $2.8M | Direct | May 21, 2020 (1d) |
| May 18, 2020 | ADPT | ↓ Sell | 77,700 | $36.85 | $2.9M | Direct | May 18, 2020 (0d) |
| Apr 22, 2020 | ADPT | ↓ Sell | 44,400 | $29.70 | $1.3M | Direct | Apr 22, 2020 (0d) |
| Feb 20, 2020 | ADPT | ↓ Sell | 7,400 | $33.46 | $248K | Direct | Feb 24, 2020 (4d) |
| Feb 19, 2020 | ADPT | ↓ Sell | 25,900 | $31.76 | $823K | Direct | Feb 20, 2020 (1d) |
| Jan 17, 2020 | ADPT | ↓ Sell | 11,100 | $28.77 | $319K | Direct | Jan 17, 2020 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other ADPT insiders
Open-market trades in the last 12 months
About Harlan S Robins's insider trades
Harlan S Robins is Chief Scientific Officer at Adaptive Biotechnologies (ADPT). Since Jan 17, 2020, Harlan has reported no open-market purchases and 42 sales worth $63.2M on SEC Form 4. In the last 12 months: 10 sales ($29.6M).
Their filings also include option exercises (30 filings), grants and awards (7 filings), conversions (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every ADPT insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.