Adaptive Biotechnologies Corporation (ADPT) Insider Trading

Over the last 3 months, ADPT insiders made 0 open-market buys and 28 sales, a net sale of -$12.8M (SEC Form 4). Over the last 6 months, 209 institutions increased and 188 reduced their position (13F).

Insider Activity

Sentiment
0/100
Buys (3m)
0
Sells (3m)
28
Net (3m)
-$12.8M
Insider trades by month Buys Sells
Jan
Feb
Mar
Apr
May
Jun
Context3-month price +54.5%Institutions mixed (13F)
DateInsiderTypeSharesPrice
Jun 30, 2026BENZENO SHARONofficer: Chief Commercial Ofc Imm MedSell154,768$21.14
Jun 30, 2026BENZENO SHARONofficer: Chief Commercial Ofc Imm MedOption1,837$12.14
Jun 30, 2026BENZENO SHARONofficer: Chief Commercial Ofc Imm MedOption11,034$12.14
Jun 30, 2026BENZENO SHARONofficer: Chief Commercial Ofc Imm MedSell11,034$21.00
Jun 30, 2026BENZENO SHARONofficer: Chief Commercial Ofc Imm MedOption24,944$8.46
Jun 30, 2026BENZENO SHARONofficer: Chief Commercial Ofc Imm MedOption51,570$8.12
Jun 29, 2026GRIFFIN MICHELLE RENEEdirectorOption52,084$7.80
Jun 29, 2026GRIFFIN MICHELLE RENEEdirectorSell52,084$20.18
Jun 29, 2026BOBULSKY SUSANofficer: Chief Commercial Officer, MRDSell5,000$20.50
Jun 17, 2026ROBINS HARLAN Sofficer: Chief Scientific OfficerSell100,000$17.37
Jun 17, 2026ROBINS HARLAN Sofficer: Chief Scientific OfficerSell6,160$18.01
Jun 15, 2026BOBULSKY SUSANofficer: Chief Commercial Officer, MRDSell5,000$19.00
Jun 8, 2026BOBULSKY SUSANofficer: Chief Commercial Officer, MRDSell11,000$18.00
Jun 8, 2026LO FRANCISofficer: Chief People OfficerSell39,741$17.49
Jun 8, 2026LO FRANCISofficer: Chief People OfficerOption5,792$12.14
Jun 8, 2026LO FRANCISofficer: Chief People OfficerOption9,376$8.12
Jun 8, 2026LO FRANCISofficer: Chief People OfficerOption2,009$8.46
Jun 8, 2026LO FRANCISofficer: Chief People OfficerOption2,344$3.99
May 20, 2026PISKEL KYLEofficer: Chief Financial OfficerSell3,115$13.04
Apr 29, 2026RUBINSTEIN JULIEofficer: President and COOSell19,037$14.23
Apr 29, 2026RUBINSTEIN JULIEofficer: President and COOOption14,707$8.46
Apr 24, 2026RUBINSTEIN JULIEofficer: President and COOOption14,722$8.46
Apr 24, 2026RUBINSTEIN JULIEofficer: President and COOSell19,060$14.13
Apr 21, 2026RUBINSTEIN JULIEofficer: President and COOOption11,881$12.14
Apr 21, 2026RUBINSTEIN JULIEofficer: President and COOSell19,060$14.57
Apr 21, 2026RUBINSTEIN JULIEofficer: President and COOSell30,941$14.66
Apr 21, 2026RUBINSTEIN JULIEofficer: President and COOOption14,722$8.46
Apr 16, 2026RUBINSTEIN JULIEofficer: President and COOSell19,060$14.56
Apr 16, 2026RUBINSTEIN JULIEofficer: President and COOOption14,722$8.46
Apr 13, 2026RUBINSTEIN JULIEofficer: President and COOSell3,338$14.08

Source: ADPT SEC Form 4 filings, latest Jun 30, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their ADPT positions over the last 6 months (SEC Form 13F).

Increased
209
New positions
104
Reduced
188
Sold out
76
Largest moves
InstitutionActionSharesFiled
VIKING GLOBAL INVESTORS LPUnchanged30.0MMay 15, 2026
VIKING GLOBAL INVESTORS LPUnchanged30.0MFeb 17, 2026
BLACKROCK, INC.Reduced13.3MFeb 12, 2026
BLACKROCK, INC.Reduced13.3MMay 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position12.2MMay 15, 2026
VANGUARD GROUP INCIncreased11.3MJan 29, 2026
WESTFIELD CAPITAL MANAGEMENT CO LPIncreased5.4MMay 11, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position4.5MMay 8, 2026
INVESCO LTD.Increased4.5MMay 12, 2026
PRICE T ROWE ASSOCIATES INC /MD/Increased4.4MFeb 17, 2026
WESTFIELD CAPITAL MANAGEMENT CO LPNew Position4.1MFeb 11, 2026
WELLINGTON MANAGEMENT GROUP LLPIncreased3.9MMay 15, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased3.6MMay 15, 2026
LORD, ABBETT & CO. LLCIncreased3.5MMay 14, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased3.5MFeb 9, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.