Adaptive Biotechnologies Corporation

ADPTNASDAQHealthcare● Active

$16.86

$-0.04(-0.22%)

Market Cap$2.7B

P/E Ratio—

52W High$20.76

52W Low$9.78

Avg Volume1.9M

Open$17.16

Beta2.15

Insider Trades Ownership Employees

Adaptive Biotechnologies Corporation (ADPT) Insider Trading

Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.

SEC EDGAR · FMP · ADPT · as of Jun 8, 2026

Activity summary

Buy transactions

P-Purchase only

Sell transactions

12 Months

Buy/Sell ratio

0.00

Buy/Sell (by trades)

Overall sentiment

BEARISH

↑ Buy 0%Active transactions only · RSU vesting excluded100% Sell ↓

Adaptive Biotechnologies Corporation insiders have been primarily selling shares over the past 12 Months. Selling activity is often driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment toward the company.

▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only

As of Jun 8, 2026

ADPT insider buying and selling by quarter

ADPT insider selling · ADPT insider buying stocks · quarterly insider activity

Total insider buying (incl. awards)Total insider selling

3.2M1.6M0

2024 Q2

2024 Q3

2024 Q4

2025 Q1

2025 Q2

2025 Q4

2026 Q1

2026 Q2

Mobile shows last 4Q · Desktop shows full 8Q

▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters

As of Jun 8, 2026

Active insiders

Most active in past 12 months · ADPT ceo insider trading

Showing all insiders · Click a card to filter the transactions table below

▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API

Recent insider transactions

ADPT executive sell shares · ADPT board member insider trading · ADPT insider trading SEC filing

Showing 69 most recent · Common Stock · Form 4 only

Scroll horizontally to see all columns

Date	Insider	Type	Shares	Price	Value	After trans.	Filing
May 18, 2026	PISKEL KYLE CFO	Sale	3,115	$13.04	$41K	256,725	Form 4
Apr 27, 2026	RUBINSTEIN JULIE President and COO	Option	14,707	$8.46	$124K	396,839	Form 4
Apr 27, 2026	RUBINSTEIN JULIE President and COO	Sale	19,037	$14.23	$271K	377,802	Form 4
Apr 22, 2026	RUBINSTEIN JULIE President and COO	Option	14,722	$8.46	$125K	409,868	Form 4
Apr 23, 2026	RUBINSTEIN JULIE President and COO	Option	14,722	$8.46	$125K	405,530	Form 4
Apr 24, 2026	RUBINSTEIN JULIE President and COO	Option	14,722	$8.46	$125K	401,192	Form 4
Apr 22, 2026	RUBINSTEIN JULIE President and COO	Sale	19,060	$14.13	$269K	390,808	Form 4
Apr 23, 2026	RUBINSTEIN JULIE President and COO	Sale	19,060	$13.74	$262K	386,470	Form 4
Apr 24, 2026	RUBINSTEIN JULIE President and COO	Sale	19,060	$14.02	$267K	382,132	Form 4
Apr 21, 2026	RUBINSTEIN JULIE President and COO	Option	11,881	$12.14	$144K	426,087	Form 4
Apr 17, 2026	RUBINSTEIN JULIE President and COO	Option	14,722	$8.46	$125K	422,882	Form 4
Apr 20, 2026	RUBINSTEIN JULIE President and COO	Option	14,722	$8.46	$125K	418,544	Form 4
Apr 21, 2026	RUBINSTEIN JULIE President and COO	Option	14,722	$8.46	$125K	414,206	Form 4
Apr 17, 2026	RUBINSTEIN JULIE President and COO	Sale	19,060	$14.57	$278K	403,822	Form 4
Apr 20, 2026	RUBINSTEIN JULIE President and COO	Sale	19,060	$14.55	$277K	399,484	Form 4
Apr 21, 2026	RUBINSTEIN JULIE President and COO	Sale	30,941	$14.66	$454K	395,146	Form 4
Apr 14, 2026	RUBINSTEIN JULIE President and COO	Option	14,722	$8.46	$125K	435,896	Form 4
Apr 15, 2026	RUBINSTEIN JULIE President and COO	Option	14,722	$8.46	$125K	431,558	Form 4
Apr 16, 2026	RUBINSTEIN JULIE President and COO	Option	14,722	$8.46	$125K	427,220	Form 4
Apr 14, 2026	RUBINSTEIN JULIE President and COO	Sale	19,060	$14.56	$278K	416,836	Form 4
Apr 15, 2026	RUBINSTEIN JULIE President and COO	Sale	19,060	$14.61	$278K	412,498	Form 4
Apr 16, 2026	RUBINSTEIN JULIE President and COO	Sale	19,060	$14.18	$270K	408,160	Form 4
Apr 9, 2026	RUBINSTEIN JULIE President and COO	Option	14,722	$7.27	$107K	448,910	Form 4
Apr 10, 2026	RUBINSTEIN JULIE President and COO	Option	14,722	$7.27	$107K	444,572	Form 4
Apr 13, 2026	RUBINSTEIN JULIE President and COO	Option	6,613	$8.46	$56K	440,234	Form 4

PISKEL KYLE

CFO

Sale

Date

May 18

3,115

Price

$13.04

Value

$41K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Option

Date

Apr 27

14,707

Price

$8.46

Value

$124K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Sale

Date

Apr 27

19,037

Price

$14.23

Value

$271K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Option

Date

Apr 22

14,722

Price

$8.46

Value

$125K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Option

Date

Apr 23

14,722

Price

$8.46

Value

$125K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Option

Date

Apr 24

14,722

Price

$8.46

Value

$125K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Sale

Date

Apr 22

19,060

Price

$14.13

Value

$269K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Sale

Date

Apr 23

19,060

Price

$13.74

Value

$262K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Sale

Date

Apr 24

19,060

Price

$14.02

Value

$267K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Option

Date

Apr 21

11,881

Price

$12.14

Value

$144K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Option

Date

Apr 17

14,722

Price

$8.46

Value

$125K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Option

Date

Apr 20

14,722

Price

$8.46

Value

$125K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Option

Date

Apr 21

14,722

Price

$8.46

Value

$125K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Sale

Date

Apr 17

19,060

Price

$14.57

Value

$278K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Sale

Date

Apr 20

19,060

Price

$14.55

Value

$277K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Sale

Date

Apr 21

30,941

Price

$14.66

Value

$454K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Option

Date

Apr 14

14,722

Price

$8.46

Value

$125K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Option

Date

Apr 15

14,722

Price

$8.46

Value

$125K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Option

Date

Apr 16

14,722

Price

$8.46

Value

$125K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Sale

Date

Apr 14

19,060

Price

$14.56

Value

$278K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Sale

Date

Apr 15

19,060

Price

$14.61

Value

$278K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Sale

Date

Apr 16

19,060

Price

$14.18

Value

$270K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Option

Date

Apr 9

14,722

Price

$7.27

Value

$107K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Option

Date

Apr 10

14,722

Price

$7.27

Value

$107K

View Form 4 on SEC.gov

RUBINSTEIN JULIE

President and COO

Option

Date

Apr 13

6,613

Price

$8.46

Value

$56K

View Form 4 on SEC.gov

⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar

1 / 3

▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —

About ADPT insider trading

ADPT insider trades

Adaptive Biotechnologies Corporation (ADPT) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including RUBINSTEIN JULIE (President and COO), LO FRANCIS (CPO), ROBINS CHAD M (CEO and Chairman · Director). Over the past 12 months, 5 insiders have filed transactions with the SEC. ADPT insiders have been primarily selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.

For Adaptive Biotechnologies Corporation's institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →

Buy/Sell signal logic

acquisitionOrDisposition field:

A = Acquisition (buy) · D = Disposition (sell)

RSU vesting (M-Exempt) excluded from sentiment

Form 4SEC filing required within 2 business days of any insider transaction

10b5-1Pre-scheduled trading plan that allows insiders to sell on autopilot

Open MktDirect purchase or sale on the open market (excludes awards, options)

Ownership SEC filings Financial statements Price history Forecast & ratings Earnings

Frequently asked questions

ADPT insider trading · 5 questions

The insiders of Adaptive Biotechnologies Corporation (ADPT) include executives and directors such as RUBINSTEIN JULIE (President and COO), LO FRANCIS (CPO), ROBINS CHAD M (CEO and Chairman · Director), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.

ADPT board member insider tradingwho are ADPT insidersADPT insider rosterAdaptive Biotechnologies Corporation executives insider activity

▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026