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$STOK

$32.99 +$1.61 (5.13%)

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Valuations P Insider Transactions P Congressional Trades P

Insider Transactions

Insider Transaction Summary

Tree Partners IV, L.P. Apple

17,161,713 shares

Net: 0 B/S: -

III GP, Ltd. ATP

16,786,713 shares

Net: 0 B/S: -

Horizon Enterprise Ltd Blue

3,906,181 shares

Net: 0 B/S: -

INVESTMENTS, LP RTW

3,544,248 shares

Net: 0 B/S: -

RODERICK WONG

3,455,809 shares

Net: 0 B/S: -

Group, LLC Redmile

671,808 shares

Net: 0 B/S: -

IAN F SMITH

193,000 shares

Net: +763,000 B/S: ∞

Stephen J Tulipano

60,000 shares

Net: 0 B/S: -

Gene Liau

40,800 shares

Net: 0 B/S: -

Barry Ticho

34,826 shares

Net: +82,424 B/S: 2.87

Clare Kahn

30,782 shares

Net: +30,782 B/S: ∞

Garry E Menzel

29,747 shares

Net: 0 B/S: -

Samuel W. Hall

29,555 shares

Net: 0 B/S: -

Jonathan Allan

20,144 shares

Net: +48,488 B/S: 1.71

Adrian R. Krainer

17,786 shares

Net: -82,948 B/S: 0.18

Jennifer Burstein

17,786 shares

Net: +17,786 B/S: ∞

Julie Smith

17,786 shares

Net: +17,786 B/S: ∞

Seth Loring Harrison

17,786 shares

Net: +17,786 B/S: ∞

ARTHUR A LEVIN

17,786 shares

Net: +19,603 B/S: 33.4

ARTHUR TZIANABOS

17,786 shares

Net: +17,386 B/S: 4.99

Edward M. MD Kaye

17,786 shares

Net: -157,497 B/S: 1.16

Jason Hoitt

10,445 shares

Net: +79,205 B/S: 29.34

Thomas Leggett

10,381 shares

Net: +71,303 B/S: 21.69

Huw M. Nash

33 shares

Net: 0 B/S: -

Life Science Ventures, L.P. ATP

0 shares

Net: 0 B/S: -

Robin A. Walker

0 shares

Net: 0 B/S: -

Insider Name	Current Shares	Net Change (1yr)	Buy/Sell Ratio
Tree Partners IV, L.P. Apple	17,161,713	0	-
III GP, Ltd. ATP	16,786,713	0	-
Horizon Enterprise Ltd Blue	3,906,181	0	-
INVESTMENTS, LP RTW	3,544,248	0	-
RODERICK WONG	3,455,809	0	-
Group, LLC Redmile	671,808	0	-
IAN F SMITH	193,000	+763,000	∞
Stephen J Tulipano	60,000	0	-
Gene Liau	40,800	0	-
Barry Ticho	34,826	+82,424	2.87
Clare Kahn	30,782	+30,782	∞
Garry E Menzel	29,747	0	-
Samuel W. Hall	29,555	0	-
Jonathan Allan	20,144	+48,488	1.71
Adrian R. Krainer	17,786	-82,948	0.18
Jennifer Burstein	17,786	+17,786	∞
Julie Smith	17,786	+17,786	∞
Seth Loring Harrison	17,786	+17,786	∞
ARTHUR A LEVIN	17,786	+19,603	33.4
ARTHUR TZIANABOS	17,786	+17,386	4.99
Edward M. MD Kaye	17,786	-157,497	1.16
Jason Hoitt	10,445	+79,205	29.34
Thomas Leggett	10,381	+71,303	21.69
Huw M. Nash	33	0	-
Life Science Ventures, L.P. ATP	0	0	-
Robin A. Walker	0	0	-

Individual Transactions

June 03, 2026

ARTHUR A LEVIN

Grant/Award Acquisition

Change: +17,786

Price: $0.00

Shares: 17,786

Value: +$0

Seth Loring Harrison

Grant/Award Acquisition

Change: +17,786

Price: $0.00

Shares: 17,786

Value: +$0

Edward M. MD Kaye

Grant/Award Acquisition

Change: +17,786

Price: $0.00

Shares: 17,786

Value: +$0

Julie Smith

Grant/Award Acquisition

Change: +17,786

Price: $0.00

Shares: 17,786

Value: +$0

ARTHUR TZIANABOS

Grant/Award Acquisition

Change: +17,786

Price: $0.00

Shares: 17,786

Value: +$0

Jennifer Burstein

Grant/Award Acquisition

Change: +17,786

Price: $0.00

Shares: 17,786

Value: +$0

Adrian R. Krainer

Grant/Award Acquisition

Change: +17,786

Price: $0.00

Shares: 17,786

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
ARTHUR A LEVIN	Jun 05	Grant/Award Acquisition (A) Compensation/Award	17,786	+17,786	$0.00	+$0
Seth Loring Harrison	Jun 05	Grant/Award Acquisition (A) Compensation/Award	17,786	+17,786	$0.00	+$0
Edward M. MD Kaye	Jun 05	Grant/Award Acquisition (A) Compensation/Award	17,786	+17,786	$0.00	+$0
Julie Smith	Jun 05	Grant/Award Acquisition (A) Compensation/Award	17,786	+17,786	$0.00	+$0
ARTHUR TZIANABOS	Jun 05	Grant/Award Acquisition (A) Compensation/Award	17,786	+17,786	$0.00	+$0
Jennifer Burstein	Jun 05	Grant/Award Acquisition (A) Compensation/Award	17,786	+17,786	$0.00	+$0
Adrian R. Krainer	Jun 05	Grant/Award Acquisition (A) Compensation/Award	17,786	+17,786	$0.00	+$0

June 01, 2026

Barry Ticho

Open Market Sale

Change: -1,795

Price: $30.58

Shares: 34,826

Value: -$54,891

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Barry Ticho	Jun 03	Open Market Sale (S) Market Sale	34,826	-1,795	$30.58	-$54,891

May 01, 2026

Barry Ticho

Open Market Sale

Change: -2,243

Price: $32.79

Shares: 36,621

Value: -$73,547

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Barry Ticho	May 05	Open Market Sale (S) Market Sale	36,621	-2,243	$32.79	-$73,547

April 03, 2026

Clare Kahn

Grant/Award Acquisition

Change: +30,782

Price: $0.00

Shares: 30,782

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Clare Kahn	Apr 07	Grant/Award Acquisition (A) Compensation/Award	30,782	+30,782	$0.00	+$0

April 01, 2026

Barry Ticho

Open Market Sale

Change: -1,838

Price: $32.66

Shares: 38,864

Value: -$60,029

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Barry Ticho	Apr 03	Open Market Sale (S) Market Sale	38,864	-1,838	$32.66	-$60,029

March 20, 2026

Jonathan Allan

Open Market Sale

Change: -8,692

Price: $33.64

Shares: 20,144

Value: -$292,358

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Jonathan Allan	Mar 24	Open Market Sale (S) Market Sale	20,144	-8,692	$33.64	-$292,358

March 19, 2026

Barry Ticho

Option Exercise/Conversion

Change: +1,365

Price: $2.19

Shares: 42,163

Value: +$2,989

Barry Ticho

Open Market Sale

Change: -1,461

Price: $29.99

Shares: 40,702

Value: -$43,815

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Barry Ticho	Mar 19	Option Exercise/Conversion (M) Compensation/Award	42,163	+1,365	$2.19	+$2,989
Barry Ticho	Mar 19	Open Market Sale (S) Market Sale	40,702	-1,461	$29.99	-$43,815

March 18, 2026

Jonathan Allan

Open Market Sale

Change: -4,222

Price: $31.28

Shares: 29,242

Value: -$132,080

Barry Ticho

Open Market Sale

Change: -6,100

Price: $31.28

Shares: 41,384

Value: -$190,831

Jason Hoitt

Open Market Sale

Change: -1,762

Price: $31.28

Shares: 10,445

Value: -$55,122

Thomas Leggett

Open Market Sale

Change: -2,173

Price: $31.28

Shares: 10,381

Value: -$67,979

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Jonathan Allan	Mar 19	Open Market Sale (S) Market Sale	29,242	-4,222	$31.28	-$132,080
Barry Ticho	Mar 19	Open Market Sale (S) Market Sale	41,384	-6,100	$31.28	-$190,831
Jason Hoitt	Mar 19	Open Market Sale (S) Market Sale	10,445	-1,762	$31.28	-$55,122
Thomas Leggett	Mar 19	Open Market Sale (S) Market Sale	10,381	-2,173	$31.28	-$67,979

March 17, 2026

Jonathan Allan

Open Market Sale

Change: -2,476

Price: $32.74

Shares: 35,255

Value: -$81,062

Barry Ticho

Open Market Sale

Change: -3,577

Price: $32.74

Shares: 50,071

Value: -$117,108

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Jonathan Allan	Mar 19	Open Market Sale (S) Market Sale	35,255	-2,476	$32.74	-$81,062
Barry Ticho	Mar 19	Open Market Sale (S) Market Sale	50,071	-3,577	$32.74	-$117,108