SI

SHOULDER INNOVATIONS, INC.$17.91-0.44 (-2.40%)

Prev Close$18.35·MCap$275.9M·P/E—·Vol59.9K·Yield—

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Buys (12M)

$170.0K

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Sells (12M)

$5.47M

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Net Activity

Net Seller

$5.30M

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Active Insiders

last 12 mo

Over the past 12 months, insider activity at SHOULDER INNOVATIONS, INC. (SI) has been dominated by selling, with 3 insider purchases totaling $170.0K and 8 insider sales totaling $5.47M. The most recent insider transaction was by Ball Robert Joseph (director, officer: CEO & Executive Chairman), who sold $187.7K worth of shares on Sep 14, 2026. SHOULDER INNOVATIONS, INC. operates in the Healthcare sector, within the Medical - Specialties industry, with a market cap of $275.9M.

SI Insider Trading Activity

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Sep 14, 2026	Ball Robert Joseph	director, officer: CEO & Executive Chairman	Sell	10,175	$18.45	$187.7K	380,824
Aug 28, 2026	Gilde Healthcare Holding B.V.	10 percent owner	Sell	1,196	$22.60	$27.0K	2,185,914
Aug 24, 2026	Gilde Healthcare Holding B.V.	10 percent owner	Sell	25,097	$22.61	$567.4K	2,208,307
Aug 18, 2026	Ahearn Matthew Fraser	director, officer: Chief Operating Officer	Sell	22,500	$20.66	$464.8K	258,362
Aug 7, 2026	Gilde Healthcare Holding B.V.	10 percent owner	Sell	9,433	$22.63	$213.5K	2,214,302
Aug 5, 2026	Gilde Healthcare Holding B.V.	10 percent owner	Sell	110,563	$22.76	$2.52M0.5% OS	2,321,452
Aug 3, 2026	Gilde Healthcare Holding B.V.	10 percent owner	Sell	48,279	$23.10	$1.12M	2,352,237
Jun 16, 2026	Ahearn Matthew Fraser	director, officer: Chief Operating Officer	Sell	20,000	$18.71	$374.3K	273,320
Mar 17, 2026	Ball Robert Joseph	director, officer: CEO & Executive Chairman	Buy	2,200	$15.18	$33.4K	278,866
Dec 11, 2025	Ball Robert Joseph	CEO & Executive Chairman	Buy	7,200	$14.86	$107.0K	0
Dec 11, 2025	Points Jeffrey S.	Chief Financial Officer	Buy	2,000	$14.82	$29.6K	0
Sep 11, 2025	Ball Robert Joseph	CEO & EXECUTIVE CHAIRMAN	Buy	8,000	$15.34	$122.8K	0
Sep 11, 2025	Points Jeffrey S.	CHIEF FINANCIAL OFFICER	Buy	1,600	$15.67	$25.1K	0
Aug 1, 2025	Buchholz Richard	Director	Buy	5,000	$15.00	$75.0K	0
Aug 1, 2025	Carusi Michael A	Director	Buy	266,666	$15.00	$4.00M1.3% OS	0
Aug 1, 2025	Gilde Healthcare Holding B.V.	10% Owner	Buy	100,000	$15.00	$1.50M	0
Aug 1, 2025	Points Jeffrey S.	CHIEF FINANCIAL OFFICER	Buy	50	$15.00	$750.00	0
Aug 1, 2025	Tansey Casey M	Director	Buy	40,000	$15.00	$600.0K	0

SI Insider Buying Activity

The following table shows recent insider purchases of SHOULDER INNOVATIONS, INC. (SI) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Mar 17, 2026	Ball Robert Joseph	director, officer: CEO & Executive Chairman	Buy	2,200	$15.18	$33.4K	278,866
Dec 11, 2025	Ball Robert Joseph	CEO & Executive Chairman	Buy	7,200	$14.86	$107.0K	0
Dec 11, 2025	Points Jeffrey S.	Chief Financial Officer	Buy	2,000	$14.82	$29.6K	0
Sep 11, 2025	Ball Robert Joseph	CEO & EXECUTIVE CHAIRMAN	Buy	8,000	$15.34	$122.8K	0
Sep 11, 2025	Points Jeffrey S.	CHIEF FINANCIAL OFFICER	Buy	1,600	$15.67	$25.1K	0
Aug 1, 2025	Buchholz Richard	Director	Buy	5,000	$15.00	$75.0K	0
Aug 1, 2025	Carusi Michael A	Director	Buy	266,666	$15.00	$4.00M1.3% OS	0
Aug 1, 2025	Gilde Healthcare Holding B.V.	10% Owner	Buy	100,000	$15.00	$1.50M	0
Aug 1, 2025	Points Jeffrey S.	CHIEF FINANCIAL OFFICER	Buy	50	$15.00	$750.00	0
Aug 1, 2025	Tansey Casey M	Director	Buy	40,000	$15.00	$600.0K	0

SI Insider Selling Activity

The following table shows recent insider sales of SHOULDER INNOVATIONS, INC. (SI) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Sep 14, 2026	Ball Robert Joseph	director, officer: CEO & Executive Chairman	Sell	10,175	$18.45	$187.7K	380,824
Aug 28, 2026	Gilde Healthcare Holding B.V.	10 percent owner	Sell	1,196	$22.60	$27.0K	2,185,914
Aug 24, 2026	Gilde Healthcare Holding B.V.	10 percent owner	Sell	25,097	$22.61	$567.4K	2,208,307
Aug 18, 2026	Ahearn Matthew Fraser	director, officer: Chief Operating Officer	Sell	22,500	$20.66	$464.8K	258,362
Aug 7, 2026	Gilde Healthcare Holding B.V.	10 percent owner	Sell	9,433	$22.63	$213.5K	2,214,302
Aug 5, 2026	Gilde Healthcare Holding B.V.	10 percent owner	Sell	110,563	$22.76	$2.52M0.5% OS	2,321,452
Aug 3, 2026	Gilde Healthcare Holding B.V.	10 percent owner	Sell	48,279	$23.10	$1.12M	2,352,237
Jun 16, 2026	Ahearn Matthew Fraser	director, officer: Chief Operating Officer	Sell	20,000	$18.71	$374.3K	273,320