Julie Rubinstein Insider Trades & Stock Holdings

President and COO · Adaptive Biotechnologies Corporation · Latest filing Oct 16, 2026

Julie Rubinstein, President and COO at Adaptive Biotechnologies Corporation has 12 Form 4 trades on file since Oct 1, 2026. Open-market activity: 0 purchases ($0) and 12 sales ($3.78M), net -$3.78M. Latest filing: disposed of 11.88K shares of $ADPT on Oct 16, 2026 at $24.24.

Trades on file

12

Open-market bought

$0

Open-market sold

$3.78M

Net open-market

-$3.78M

Shares held ($ADPT)

377.80K

Latest filing

Oct 16, 2026

Shares held by Julie Rubinstein

• $ADPT377.80K sh

Shares owned after the most recent Form 4 for each company.

All insider trades by Julie Rubinstein

Date	Ticker	Type	Shares	Price	Value	Owned after	ΔOwn	1W	1M	6M	Role	Filing	Story
Oct 16, 2026	$ADPT	Sell (Open-market sale) 10b5-1	11.88K	$24.24	$288.01K	377.80K	-3.05%				President and COO	SEC	Read
Oct 15, 2026	$ADPT	Sell (Open-market sale) 10b5-1	11.88K	$25.61	$304.27K	377.80K	-3.05%				President and COO	SEC	Read
Oct 14, 2026	$ADPT	Sell (Open-market sale) 10b5-1	11.88K	$25.68	$305.07K	377.80K	-3.05%				President and COO	SEC	Read
Oct 13, 2026	$ADPT	Sell (Open-market sale) 10b5-1	11.88K	$25.50	$302.97K						President and COO		Read
Oct 12, 2026	$ADPT	Sell (Open-market sale) 10b5-1	11.88K	$25.51	$303.13K						President and COO		Read
Oct 9, 2026	$ADPT	Sell (Open-market sale) 10b5-1	11.88K	$26.41	$313.78K			-9.3%			President and COO		Read
Oct 8, 2026	$ADPT	Sell (Open-market sale) 10b5-1	11.88K	$25.66	$304.87K			-2.0%			President and COO		—
Oct 7, 2026	$ADPT	Sell (Open-market sale) 10b5-1	11.88K	$26.40	$313.66K			-2.5%			President and COO		—
Oct 6, 2026	$ADPT	Sell (Open-market sale) 10b5-1	11.88K	$27.75	$329.70K			-6.0%			President and COO		—
Oct 5, 2026	$ADPT	Sell (Open-market sale) 10b5-1	11.88K	$29.19	$346.81K			-14.3%			President and COO		—
Oct 2, 2026	$ADPT	Sell (Open-market sale) 10b5-1	11.88K	$28.13	$334.21K			-6.6%			President and COO		—
Oct 1, 2026	$ADPT	Sell (Open-market sale) 10b5-1	11.88K	$28.05	$333.30K			-4.7%			President and COO		—

"Buy" means shares acquired on the Form 4 (including grants and option exercises); "Sell" means shares disposed. 1W / 1M / 6M = how the stock moved after the trade.

Stocks Julie Rubinstein traded

• $ADPT

Frequently asked questions

Has Julie Rubinstein been buying or selling stock?

Julie Rubinstein has 0 open-market purchases and 12 open-market sales on file, net -$3.78M. Grants, option exercises and tax withholding are listed separately because they are not open-market trades.

What was Julie Rubinstein's latest insider trade?

disposed of 11.88K shares of $ADPT on Oct 16, 2026 at $24.24.

Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.