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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 18 sales; 305 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
18 filings
7 insiders, $32.4M in total
Insiders trading
7
Net value
−$32.4M
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
Robins Chad MCEO and Chairman2,080,518Nov 12, 20269
Rubinstein JuliePresident and COO377,802Nov 10, 202625
Bobulsky SusanChief Commercial Officer, MRD389,350Oct 8, 202611
Lo FrancisChief People Officer220,867Oct 5, 202613
Owen Katey EinterzDirector66,100Sep 2, 20263
Hershberg RobertDirector46,683Aug 20, 20263
Neupert Peter MDirector130,625Aug 19, 20262
Robins Harlan SChief Scientific Officer812,058Jul 23, 202610
Benzeno SharonChief Commercial Ofc Imm Med221,278Jun 30, 20265
Griffin Michelle ReneeDirector15,625Jun 29, 20264
Piskel KyleChief Financial Officer256,725May 20, 20267
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
Nov 10, 2026 (view filing)7:26 PM ETNov 9-101 dayRubinstein JuliePresident and COOSSale−23.8K$29.82−$708.6K−5.9%377.8K after5 lots10b5-1
Nov 6, 2026 (view filing)7:24 PM ETNov 4-62 daysRubinstein JuliePresident and COOSSale−35.6K$26.78−$954.4K−8.6%377.8K after7 lots10b5-1
Nov 3, 2026 (view filing)7:51 PM ETOct 30-Nov 34 daysRubinstein JuliePresident and COOSSale−35.6K$26.06−$928.9K−8.6%377.8K after5 lots10b5-1
Oct 29, 2026 (view filing)7:52 PM ETOct 27-292 daysRubinstein JuliePresident and COOSSale−35.6K$28.00−$998.1K−8.6%377.8K after5 lots10b5-1
Oct 26, 2026 (view filing)6:52 PM ETOct 22-264 daysRubinstein JuliePresident and COOSSale−35.6K$25.18−$897.5K−8.6%377.8K after6 lots10b5-1
Oct 21, 2026 (view filing)6:36 PM ETOct 19-212 daysRubinstein JuliePresident and COOSSale−35.6K$24.66−$879.1K−8.6%377.8K after5 lots10b5-1
Oct 16, 2026 (view filing)7:21 PM ETOct 14-162 daysRubinstein JuliePresident and COOSSale−35.6K$25.18−$897.4K−8.6%377.8K after5 lots10b5-1
Oct 13, 2026 (view filing)7:05 PM ETOct 9-134 daysRubinstein JuliePresident and COOSSale−35.6K$25.81−$919.9K−8.6%377.8K after4 lots10b5-1
Oct 8, 2026 (view filing)6:54 PM ETOct 6-82 daysRubinstein JuliePresident and COOSSale−35.6K$26.60−$948.2K−8.6%377.8K after6 lots10b5-1
Oct 8, 2026 (view filing)6:52 PM ETOct 62 daysBobulsky SusanChief Commercial Officer, MRDSSale−6.44K$30.00−$193.3K−1.6%389.4K after10b5-1
Oct 5, 2026 (view filing)8:15 PM ETOct 1-54 daysRubinstein JuliePresident and COOSSale−35.6K$28.46−$1.01M−8.6%377.8K after5 lots10b5-1
Oct 5, 2026 (view filing)8:12 PM ETOct 14 daysLo FrancisChief People OfficerSSale−26.8K$28.28−$757.7K−10.8%220.9K after2 lots10b5-1
Sep 18, 2026 (view filing)8:17 PM ETSep 162 daysLo FrancisChief People OfficerSSale−115.4K$28.06−$3.24M−34.3%220.9K after2 lots10b5-1
Sep 17, 2026 (view filing)6:50 PM ETSep 152 daysBobulsky SusanChief Commercial Officer, MRDSSale−1.20K$27.00−$32.3K−0.3%395.8K after10b5-1
Aug 28, 2026 (view filing)5:50 PM ETAug 262 daysOwen Katey EinterzDirectorSSale−9.62K$26.00−$250.0K−10.9%78.6K after
Aug 20, 2026 (view filing)5:55 PM ETAug 182 daysHershberg RobertDirectorSSale−30.7K$24.40−$748.2K−39.6%46.7K after2 lots
Aug 19, 2026 (view filing)8:15 PM ETAug 17-182 daysRobins Chad MCEO and ChairmanSSale−600.0K$24.80−$14.9M−21.6%2.18M after4 lots
Aug 19, 2026 (view filing)8:07 PM ETAug 172 daysNeupert Peter MDirectorSSale−124.7K$25.15−$3.14M−48.8%130.6K after3 lots
Aug 12, 2026 (view filing)7:33 PM ETAug 102 daysBobulsky SusanChief Commercial Officer, MRDSSale−3.00K$25.00−$75.0K−0.8%397.0K after10b5-1
Aug 3, 2026 (view filing)6:26 PM ETJul 304 daysBobulsky SusanChief Commercial Officer, MRDSSale−1.30K$24.00−$31.2K−0.3%400.0K after10b5-1
Jul 23, 2026 (view filing)7:34 PM ETJul 212 daysRobins Harlan SChief Scientific OfficerSSale−492.4K$21.89−$10.8M−37.7%812.1K after2 lots10b5-1
Jul 20, 2026 (view filing)7:19 PM ETJul 164 daysBobulsky SusanChief Commercial Officer, MRDSSale−5.00K$23.00−$115.0K−1.2%401.3K after10b5-1
Jul 17, 2026 (view filing)7:23 PM ETJul 152 daysLo FrancisChief People OfficerSSale−105.8K$22.59−$2.39M−31.4%230.7K after10b5-1
Jul 7, 2026 (view filing)6:52 PM ETJul 25 daysRobins Harlan SChief Scientific OfficerSSale−386.2K$22.01−$8.50M−27.5%1.02M after2 lots10b5-1
Jul 6, 2026 (view filing)7:19 PM ETJul 1-25 daysLo FrancisChief People OfficerSSale−95.8K$22.51−$2.16M−29.3%230.7K after3 lots10b5-1
Jul 6, 2026 (view filing)7:15 PM ETJul 15 daysBobulsky SusanChief Commercial Officer, MRDSSale−487$22.00−$10.7K−0.1%406.3K after10b5-1
Jun 30, 2026 (view filing)Jun 26-294 daysBenzeno SharonChief Commercial Ofc Imm MedSSale−165.8K$21.13−$3.50M−42.8%221.3K after2 lots10b5-1
Jun 29, 2026 (view filing)Jun 254 daysBobulsky SusanChief Commercial Officer, MRDSSale−5.00K$20.50−$102.5K−1.2%406.8K after10b5-1
Jun 29, 2026 (view filing)Jun 254 daysGriffin Michelle ReneeDirectorSSale−52.1K$20.18−$1.05M−76.9%15.6K after10b5-1
Jun 17, 2026 (view filing)Jun 15-162 daysRobins Harlan SChief Scientific OfficerSSale−106.2K$17.41−$1.85M−7.0%1.41M after2 lots10b5-1
Jun 15, 2026 (view filing)Jun 114 daysBobulsky SusanChief Commercial Officer, MRDSSale−5.00K$19.00−$95.0K−1.2%411.8K after10b5-1
Jun 8, 2026 (view filing)Jun 44 daysBobulsky SusanChief Commercial Officer, MRDSSale−11.0K$18.00−$198.0K−2.6%416.8K after10b5-1
Jun 8, 2026 (view filing)Jun 44 daysLo FrancisChief People OfficerSSale−39.7K$17.49−$695.1K−13.7%250.9K after10b5-1
May 20, 2026 (view filing)May 182 daysPiskel KyleChief Financial OfficerSSale−3.12K$13.04−$40.6K−1.2%256.7K after
Apr 29, 2026 (view filing)Apr 272 daysRubinstein JuliePresident and COOSSale−19.0K$14.23−$270.9K−4.8%377.8K after10b5-1
Apr 24, 2026 (view filing)Apr 22-242 daysRubinstein JuliePresident and COOSSale−57.2K$13.96−$798.4K−13.0%382.1K after3 lots10b5-1
Apr 21, 2026 (view filing)Apr 17-214 daysRubinstein JuliePresident and COOSSale−69.1K$14.60−$1.01M−14.9%395.1K after3 lots10b5-1
Apr 16, 2026 (view filing)Apr 14-162 daysRubinstein JuliePresident and COOSSale−57.2K$14.45−$826.3K−12.3%408.2K after3 lots10b5-1
Apr 13, 2026 (view filing)Apr 9-134 daysRubinstein JuliePresident and COOSSale−57.2K$13.26−$758.1K−12.0%421.2K after6 lots10b5-1
Apr 10, 2026 (view filing)Apr 82 daysRobins Harlan SChief Scientific OfficerSSale−10.0K$14.85−$148.5K−0.7%1.51M after10b5-1
Apr 10, 2026 (view filing)Apr 82 daysLo FrancisChief People OfficerSSale−22.6K$15.07−$340.0K−7.7%271.2K after10b5-1
Apr 8, 2026 (view filing)Apr 6-82 daysRubinstein JuliePresident and COOSSale−69.1K$14.34−$990.5K−13.7%434.2K after4 lots10b5-1
Apr 8, 2026 (view filing)Apr 6-82 daysRobins Chad MCEO and ChairmanSSale−120.6K$14.65−$1.77M−5.2%2.18M after2 lots10b5-1
Apr 2, 2026 (view filing)Apr 1-21 dayRubinstein JuliePresident and COOSSale−38.1K$14.53−$553.7K−7.9%447.2K after2 lots10b5-1
Mar 31, 2026 (view filing)Mar 27-314 daysRubinstein JuliePresident and COOSSale−57.2K$13.14−$751.3K−11.1%455.9K after4 lots10b5-1
Mar 26, 2026 (view filing)Mar 24-262 daysRubinstein JuliePresident and COOSSale−57.2K$14.03−$802.2K−10.9%468.9K after3 lots10b5-1
Mar 23, 2026 (view filing)Mar 19-234 daysRubinstein JuliePresident and COOSSale−57.2K$13.46−$769.6K−10.6%481.9K after3 lots10b5-1
Mar 18, 2026 (view filing)Mar 16-182 daysRubinstein JuliePresident and COOSSale−57.2K$13.33−$762.2K−10.4%494.9K after3 lots10b5-1
Mar 13, 2026 (view filing)Mar 112 daysBobulsky SusanChief Commercial Officer, MRDSSale−41.3K$13.17−$544.4K−8.8%427.8K after
Mar 13, 2026 (view filing)Mar 112 daysBenzeno SharonChief Commercial Ofc Imm MedSSale−63.1K$13.17−$831.1K−18.8%272.8K after