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Chad Robins owns 1.37% of Adaptive Biotechnologies

2,180,518 shares as of the August 18, 2026 filing, worth $52.4M at the latest close.

ADPT · $3.8B market cap · Founder-led
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Free.
The stake
1.37%
worth $52.4M at the latest close
Stake rank
#687
by dollar value of the stake
Last sale
194 days ago
Apr 8, 2026
Last buy
None
no purchases since 2020

Chad Robins owns 1.37% of Adaptive Biotechnologies Corp: 2,180,518 of 159,595,842 shares, worth about $52.4M at the 2026-10-16 close. The stake has moved from 3.92% in 2019 to 1.37% on 2026-08-18, across 20 sales and 0 purchases that moved it since 2016. The last trade that moved it was a planned sale of $1.8M on 2026-04-08.

How the stake is held

as of the Aug 18, 2026 filing
SHARES
OF THE STAKE
COMMON STOCK · stated Aug 18, 2026 · Form 4 ↗
HELD DIRECTLY
2,180,518
100.0%
THE STAKE
2,180,518
1.37%