Adaptive Biotechnologies Corporation (ADPT) has 20 known insider and institutional holders on record. The largest holder is VIKING GLOBAL PERFORMANCE LLC with 30,993,708 shares. Other notable holders include VIKING GLOBAL INVESTORS LP and GOEL DAVID E..
Over the last 12 months, insiders have made 48 transactions in ADPT stock — 16 buys (valued at $288.47K) and 10 sells (valued at $11.56M). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
ADPT Insider Ownership
Top Holder
VIKING GLOBAL PERFORMANCE LLC
30,993,708 shares
Buys (12 mo)
16
$288.47K value
Sells (12 mo)
10
$11.56M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Viking Global Performance Llc |
10 Percent Owner |
30,993,708 |
2020-11-13 |
|
| 2 |
Viking Global Investors Lp |
10 Percent Owner |
29,993,708 |
2020-12-16 |
|
| 3 |
Goel David E. |
Other: See Remarks |
12,615,090 |
2021-03-10 |
|
| 4 |
Robins Chad M |
CEO and Chairman |
2,301,113 |
2026-03-13 |
|
| 5 |
Robins Harlan S |
Chief Scientific Officer |
1,522,058 |
2026-03-13 |
|
| 6 |
Peterson Tycho |
Chief Financial Officer |
547,009 |
2024-03-06 |
|
| 7 |
Bobulsky Susan |
Chief Commercial Officer, Mrd |
427,775 |
2026-03-13 |
|
| 8 |
Lo Francis |
Chief People Officer |
291,374 |
2026-03-13 |
|
| 9 |
Benzeno Sharon |
Chief Commercial Ofc Imm Med |
272,751 |
2026-03-13 |
|
| 10 |
Piskel Kyle |
Chief Financial Officer |
259,840 |
2026-03-13 |
|
| 11 |
Neupert Peter M |
Director |
240,315 |
2026-03-06 |
|
| 12 |
Sood Nitin |
Chief Commercial Officer, Mrd |
225,358 |
2023-08-08 |
|
| 13 |
Adams R Mark |
Chief Operating Officer |
177,669 |
2023-04-12 |
|
| 14 |
Taylor Stacy L |
SVP and General Counsel |
139,365 |
2024-08-23 |
|
| 15 |
Rubinstein Julie |
President and COO |
96,441 |
2026-04-02 |
|
| 16 |
Owen Katey Einterz |
Director |
88,254 |
2026-03-06 |
|
| 17 |
Hershberg Robert |
Director |
62,347 |
2026-03-06 |
|
| 18 |
Sang Charles |
SVP, Clinical Diagnostics |
40,000 |
2020-02-18 |
|
| 19 |
Pellini Michael J |
Director |
23,726 |
2025-03-06 |
|
| 20 |
Trigg Leslie |
Director |
23,329 |
2023-03-08 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-04-02 |
Rubinstein Julie |
President and COO |
Option Exercise (Sell) |
14,722 |
$7.27 |
$107.03K |
| 2026-04-01 |
Rubinstein Julie |
President and COO |
Option Exercise (Sell) |
14,722 |
$7.27 |
$107.03K |
| 2026-03-31 |
Rubinstein Julie |
President and COO |
Option Exercise (Sell) |
14,722 |
$7.27 |
$107.03K |
| 2026-03-30 |
Rubinstein Julie |
President and COO |
Option Exercise (Sell) |
14,722 |
$7.27 |
$107.03K |
| 2026-03-27 |
Rubinstein Julie |
President and COO |
Option Exercise (Sell) |
14,722 |
$7.27 |
$107.03K |
| 2026-03-26 |
Rubinstein Julie |
President and COO |
Option Exercise (Sell) |
14,722 |
$7.27 |
$107.03K |
| 2026-03-25 |
Rubinstein Julie |
President and COO |
Option Exercise (Sell) |
14,722 |
$7.27 |
$107.03K |
| 2026-03-24 |
Rubinstein Julie |
President and COO |
Option Exercise (Sell) |
14,722 |
$7.27 |
$107.03K |
| 2026-03-23 |
Rubinstein Julie |
President and COO |
Option Exercise (Sell) |
14,722 |
$7.27 |
$107.03K |
| 2026-03-20 |
Rubinstein Julie |
President and COO |
Option Exercise (Sell) |
3,939 |
$6.55 |
$25.8K |
| 2026-03-19 |
Rubinstein Julie |
President and COO |
Option Exercise (Sell) |
14,722 |
$6.55 |
$96.43K |
| 2026-03-18 |
Rubinstein Julie |
President and COO |
Option Exercise (Sell) |
14,722 |
$6.55 |
$96.43K |
| 2026-03-17 |
Rubinstein Julie |
President and COO |
Option Exercise (Sell) |
14,722 |
$6.55 |
$96.43K |
| 2026-03-16 |
Rubinstein Julie |
President and COO |
Option Exercise (Sell) |
14,722 |
$6.55 |
$96.43K |
| 2026-03-11 |
Bobulsky Susan |
Chief Commercial Officer, Mrd |
Informative Sell |
41,338 |
$13.17 |
$544.42K |
| 2026-03-11 |
Benzeno Sharon |
Chief Commercial Ofc Imm Med |
Informative Sell |
63,103 |
$13.17 |
$831.07K |
| 2026-03-11 |
Robins Harlan S |
Chief Scientific Officer |
Informative Sell |
329,600 |
$13.17 |
$4.34M |
| 2026-03-13 |
Rubinstein Julie |
President and COO |
Option Exercise (Sell) |
14,722 |
$6.55 |
$96.43K |
| 2026-03-12 |
Rubinstein Julie |
President and COO |
Option Exercise (Sell) |
14,722 |
$6.55 |
$96.43K |
| 2026-03-11 |
Rubinstein Julie |
President and COO |
Option Exercise (Sell) |
14,722 |
$6.55 |
$96.43K |
| 2026-03-11 |
Piskel Kyle |
Chief Financial Officer |
Informative Sell |
18,672 |
$13.17 |
$245.91K |
| 2026-03-11 |
Lo Francis |
Chief People Officer |
Informative Sell |
30,593 |
$14.08 |
$430.75K |
| 2026-03-11 |
Robins Chad M |
CEO and Chairman |
Informative Sell |
329,600 |
$13.17 |
$4.34M |
| 2026-03-11 |
Griffin Michelle Renee |
Director |
Informative Sell |
15,394 |
$13.91 |
$214.13K |
| 2026-03-10 |
Rubinstein Julie |
President and COO |
Option Exercise (Sell) |
14,722 |
$6.55 |
$96.43K |
