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Adaptive Biotechnologies Corp

ADPT
Exchange
Nasdaq
Industry
Biological Products, (No Diagnostic Substances)
SEC CIK
0001478320

In the last 90 days, Adaptive Biotechnologies Corp insiders filed 0 open-market purchases and 14 sales; 301 institutions reported holding it in 13F filings for Q2 2026, worth $3.34B in total; superinvestors Viking Global Investors and ARK Invest hold it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Adaptive Biotechnologies Corp insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
14 filings
7 insiders, $46.3M in total
Insiders trading
7
Net value
−$46.3M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Adaptive Biotechnologies Corp, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Adaptive Biotechnologies Corp
NameTitleLast reported holdingLast filingFilings, past year
Lo FrancisChief People Officer220,867Sep 18, 202612
Bobulsky SusanChief Commercial Officer, MRD395,794Sep 17, 202610
Owen Katey EinterzDirector66,100Sep 2, 20263
Hershberg RobertDirector46,683Aug 20, 20263
Robins Chad MCEO and Chairman2,180,518Aug 19, 20269
Neupert Peter MDirector130,625Aug 19, 20262
Robins Harlan SChief Scientific Officer812,058Jul 23, 202611
Benzeno SharonChief Commercial Ofc Imm Med221,278Jun 30, 20265
Griffin Michelle ReneeDirector15,625Jun 29, 20264
Piskel KyleChief Financial Officer256,725May 20, 20267
Rubinstein JuliePresident and COO377,802Apr 29, 202615
Pellini Michael JDirector69,690Mar 6, 20250
Taylor Stacy LSVP and General Counsel139,365Aug 23, 20240
Peterson TychoChief Financial Officer531,553Mar 6, 20240
Sood NitinChief Commercial Officer, MRD214,808Aug 8, 20230
Adams R MarkChief Operating Officer175,361Apr 12, 20230
Trigg LeslieDirector25,907Mar 8, 20230
Conroy Kevin TDirector22,968Mar 8, 20230
Baldo LanceChief Medical Officer17,171Mar 10, 20220
Cohen Chad MChief Financial Officer21,604Dec 23, 20210
Palaniappan JyotiSVP, Diagnostics, T-Detect9,158Jul 19, 20210

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Mar 29, 2023 (view filing)Mar 272 daysGriffin Michelle ReneeDirectorSSale−2.34K$8.49−$19.9K−10.2%20.6K after
Apr 12, 2023 (view filing)Apr 10-112 daysAdams R MarkChief Operating OfficerSSale−3.13K$8.60−$26.9K−1.8%175.4K after2 lots10b5-1
Jun 6, 2023 (view filing)Jun 24 daysPeterson TychoChief Financial OfficerSSale−38.0K$7.16−$272.1K−7.7%454.9K after
Jun 20, 2023 (view filing)Jun 155 daysPeterson TychoChief Financial OfficerSSale−70.0K$8.53−$597.1K−14.9%399.2K after2 lots10b5-1
Jun 21, 2023 (view filing)Jun 201 dayPeterson TychoChief Financial OfficerSSale−135.0K$8.14−$1.10M−25.3%399.2K after2 lots10b5-1
Aug 8, 2023 (view filing)Aug 7-81 daySood NitinChief Commercial Officer, MRDSSale−16.2K$6.62−$107.3K−7.0%214.8K after2 lots10b5-1
Nov 20, 2023 (view filing)Nov 164 daysPiskel KylePrincipal Accounting OfficerSSale−259$4.13−$1.07K−0.3%87.3K after
Mar 6, 2024 (view filing)Mar 51 dayBobulsky SusanChief Commercial Officer, MRDSSale−13.0K$3.44−$44.6K−5.0%248.3K after2 lots
Mar 6, 2024 (view filing)Mar 51 dayRobins Chad MCEO and ChairmanSSale−48.7K$3.43−$167.0K−1.9%2.58M after2 lots
Mar 6, 2024 (view filing)Mar 51 dayPeterson TychoChief Financial OfficerSSale−15.5K$3.44−$53.2K−2.8%531.6K after
Mar 6, 2024 (view filing)Mar 51 dayRubinstein JuliePresidentSSale−39.1K$3.47−$135.8K−7.6%472.8K after2 lots
Mar 6, 2024 (view filing)Mar 51 dayBenzeno SharonChief Commercial Ofc Imm MedSSale−29.4K$3.44−$101.0K−8.2%327.4K after2 lots
Mar 6, 2024 (view filing)Mar 51 dayLo FrancisChief People OfficerSSale−14.7K$3.43−$50.4K−5.5%253.7K after2 lots
Mar 6, 2024 (view filing)Mar 51 dayTaylor Stacy LSVP and General CounselSSale−13.4K$3.43−$46.0K−7.4%166.3K after2 lots
Mar 6, 2024 (view filing)Mar 51 dayPiskel KylePrincipal Accounting OfficerSSale−7.73K$3.43−$26.5K−5.9%123.3K after
Aug 23, 2024 (view filing)Aug 221 dayTaylor Stacy LSVP and General CounselSSale−26.9K$4.50−$121.1K−16.2%139.4K after10b5-1
Nov 19, 2024 (view filing)Nov 181 dayPiskel KyleChief Financial OfficerSSale−248$4.98−$1.24K−0.2%154.3K after
Feb 18, 2025 (view filing)Feb 13-185 daysRobins Chad MCEO and ChairmanSSale−470.4K$8.47−$3.99M−15.4%2.58M after3 lots10b5-1
Feb 21, 2025 (view filing)Feb 19-202 daysRobins Chad MCEO and ChairmanSSale−285.2K$8.45−$2.41M−10.0%2.58M after2 lots10b5-1
Mar 6, 2025 (view filing)Mar 6Same dayGriffin Michelle ReneeDirectorSSale−15.7K$7.94−$124.4K−23.3%51.7K after10b5-1
Mar 6, 2025 (view filing)Mar 5-61 dayRobins Chad MCEO and ChairmanSSale−219.6K$7.29−$1.60M−6.9%2.96M after3 lots
Mar 6, 2025 (view filing)Mar 51 dayRobins Harlan SChief Scientific OfficerSSale−96.7K$6.99−$675.2K−7.0%1.28M after2 lots
Mar 6, 2025 (view filing)Mar 51 dayRubinstein JuliePresident and COOSSale−59.5K$6.98−$415.5K−9.2%588.2K after2 lots
Mar 6, 2025 (view filing)Mar 51 dayPiskel KyleChief Financial OfficerSSale−10.3K$6.98−$72.1K−3.7%269.0K after3 lots
Mar 6, 2025 (view filing)Mar 51 dayBenzeno SharonChief Commercial Ofc Imm MedSSale−44.7K$6.98−$311.8K−10.2%392.7K after2 lots
Mar 6, 2025 (view filing)Mar 51 dayBobulsky SusanChief Commercial Officer, MRDSSale−26.0K$6.98−$181.6K−7.0%347.2K after
Mar 6, 2025 (view filing)Mar 51 dayLo FrancisChief People OfficerSSale−20.9K$6.99−$145.8K−5.9%332.8K after2 lots
Mar 12, 2025 (view filing)Mar 102 daysNeupert Peter MDirectorSSale−10.0K$7.05−$70.5K−4.3%224.7K after
Mar 12, 2025 (view filing)Mar 12Same dayHershberg RobertDirectorSSale−53.0K$7.59−$402.3K−43.2%69.7K after
Mar 17, 2025 (view filing)Mar 134 daysGriffin Michelle ReneeDirectorSSale−36.3K$7.19−$260.9K−70.2%15.4K after
Mar 26, 2025 (view filing)Mar 242 daysRobins Harlan SChief Scientific OfficerSSale−1.70K$9.00−$15.3K−0.1%1.28M after10b5-1
May 5, 2025 (view filing)May 14 daysRobins Harlan SChief Scientific OfficerSSale−68.4K$7.35−$502.8K−5.1%1.28M after10b5-1
May 20, 2025 (view filing)May 164 daysPiskel KyleChief Financial OfficerSSale−1.93K$8.89−$17.1K−0.7%269.6K afterAmended
Nov 12, 2025 (view filing)Nov 10-122 daysRobins Chad MCEO and ChairmanSSale−89.3K$14.73−$1.32M−3.0%2.87M after3 lots10b5-1
Nov 12, 2025 (view filing)Nov 102 daysRobins Harlan SChief Scientific OfficerSSale−10.0K$14.82−$148.2K−0.8%1.27M after10b5-1
Nov 18, 2025 (view filing)Nov 171 dayPiskel KyleChief Financial OfficerSSale−238$14.05−$3.34K−0.1%269.3K after
Nov 24, 2025 (view filing)Nov 20-214 daysBenzeno SharonChief Commercial Ofc Imm MedSSale−606.4K$16.73−$10.1M−67.1%296.8K after2 lots10b5-1
Dec 1, 2025 (view filing)Nov 26-Dec 15 daysRobins Chad MCEO and ChairmanSSale−160.7K$19.10−$3.07M−5.6%2.71M after2 lots10b5-1
Dec 2, 2025 (view filing)Nov 284 daysPiskel KyleChief Financial OfficerSSale−162.8K$19.50−$3.17M−42.9%216.6K after10b5-1
Dec 5, 2025 (view filing)Dec 3-42 daysRobins Harlan SChief Scientific OfficerSSale−37.2K$18.07−$672.5K−2.9%1.23M after2 lots10b5-1
Dec 8, 2025 (view filing)Dec 44 daysBenzeno SharonChief Commercial Ofc Imm MedSSale−12.6K$16.85−$212.4K−4.1%296.8K after10b5-1
Dec 12, 2025 (view filing)Dec 102 daysHershberg RobertDirectorSSale−23.0K$16.00−$367.5K−33.0%46.7K after
Dec 17, 2025 (view filing)Dec 152 daysLo FrancisChief People OfficerSSale−113.9K$15.57−$1.77M−26.5%316.0K after10b5-1
Jan 6, 2026 (view filing)Jan 24 daysLo FrancisChief People OfficerSSale−3.13K$16.08−$50.3K−1.0%316.0K after10b5-1
Jan 7, 2026 (view filing)Jan 52 daysRobins Chad MCEO and ChairmanSSale−125.0K$15.59−$1.95M−4.6%2.58M after10b5-1
Jan 7, 2026 (view filing)Dec 22, 202516 daysLo FrancisChief People OfficerSSale−4.39K$17.50−$76.9K−1.4%316.0K afterAmended10b5-1
Jan 8, 2026 (view filing)Jan 62 daysRobins Harlan SChief Scientific OfficerSSale−10.0K$16.44−$164.4K−0.8%1.22M after10b5-1
Jan 14, 2026 (view filing)Jan 122 daysLo FrancisChief People OfficerSSale−79.6K$17.73−$1.41M−20.1%316.0K after10b5-1
Jan 14, 2026 (view filing)Jan 122 daysPiskel KyleChief Financial OfficerSSale−4.29K$18.00−$77.2K−1.9%216.6K after10b5-1
Feb 4, 2026 (view filing)Feb 22 daysRobins Chad MCEO and ChairmanSSale−125.0K$18.44−$2.30M−4.8%2.46M after10b5-1