Skip to content

NYSE · CIK 0001699350

SI SHOULDER INNOVATIONS, INC.

Insider trading from SEC Form 4. Last filing 7 d ago. Close $18.13 on Oct 9, 2026, +65% from the 52-week low and -25% from the high.

In brief

SHOULDER INNOVATIONS, INC. (SI) has 50 SEC Form 4 filings on file from 12 insiders, the latest filed on Oct 6, 2026. In the last 90 days insiders made 0 open-market buys worth $0 and 7 open-market sells worth $5.1M, net -$5.1M.

22 open-market trades have been scored at SI. The newest: Robert Joseph Ball (CEO & Executive Chairman) sold $188k of stock on Sep 14, 2026, filed Sep 14, 2026, scored 22 (weak). The largest of the 22 shown: Michael A Carusi (director) bought $4.0M on Aug 1, 2025, scored 68 (notable). 2 insiders sold within 14 days of each other around Aug 26, 2026.

4 Form 144 notices of planned sales are on file, the latest filed Sep 14, 2026.

Last 90 days

Net insider value
-$5.1M
more sold than bought
Buys
0
$0 by 0 insiders
Sells
7
$5.1M by 3 insiders
Insiders on file
12
with a Form 4 at this company

Price and insider trades, last year

SIOct 9, 2026 · close 18.13

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

Open-market buys and sells at SHOULDER INNOVATIONS, INC., scored.

ScoreInsiderValueHoldingsPrice contextFiled
22WeakRobert Joseph Ball
CEO & Executive Chairman
sell
$188k
10,175 shares
-3%-
25WeakGilde Healthcare Holding B.V.
owner
sell
$27k
1,196 shares
-0%+104% from low-8% from high
39WeakGilde Healthcare Holding B.V.
owner
sell
$567k
25,097 shares
-1%+101% from low-9% from high
25WeakMatthew Fraser Ahearn
Chief Operating Officer
sell
$465k
22,500 shares
-8%+81% from low-18% from high
32WeakGilde Healthcare Holding B.V.
owner
sell
$213k
9,433 shares
-0%+105% from low-7% from high
45ModerateGilde Healthcare Holding B.V.
owner
sell
$2.5M
110,563 shares
-5%+103% from low-8% from high
37WeakGilde Healthcare Holding B.V.
owner
sell
$1.1M
48,279 shares
-2%+111% from low-4% from high
15WeakMatthew Fraser Ahearn
Chief Operating Officer
sell
$374k
20,000 shares
-7%+70% from low-0% from high
41ModerateRobert Joseph Ball
CEO & Executive Chairman
buy
$33k
2,200 shares
+1%+35% from low-10% from high
33WeakRichard Buchholz
director
buy
$15k
1,000 shares
+8%+35% from low-10% from high
42ModerateJeffrey S. Points
Chief Financial Officer
buy
$30k
2,000 shares
+3%+35% from low-10% from high
46ModerateRobert Joseph Ball
CEO & Executive Chairman
buy
$107k
7,200 shares
+6%+36% from low-7% from high
40ModerateJeffrey S. Points
Chief Financial Officer
buy
$30k
2,000 shares
+4%+36% from low-7% from high
46ModerateRobert Joseph Ball
CEO & EXECUTIVE CHAIRMAN
buy
$123k
8,000 shares
+8%+24% from low-6% from high
40ModerateJeffrey S. Points
CHIEF FINANCIAL OFFICER
buy
$25k
1,600 shares
+3%+30% from low-2% from high
58ModerateRichard Buchholz
director
buy
$75k
5,000 shares
+65%0% from low-5% from high
68NotableMichael A Carusi
director
buy
$4.0M
266,666 shares
+16%0% from low-5% from high
61NotableLSV Associates II, LLC
other
buy
$4.0M
266,666 shares
+16%0% from low-5% from high
57ModerateGilde Healthcare Holding B.V.
owner
buy
$1.5M
100,000 shares
+4%0% from low-5% from high
65NotableGeoffrey B Pardo
director, owner
buy
$1.5M
100,000 shares
+4%0% from low-5% from high
55ModerateJeffrey S. Points
CHIEF FINANCIAL OFFICER
buy
$750
50 shares
-0% from low-5% from high
69NotableCasey M Tansey
director, owner
buy
$600k
40,000 shares
+522%0% from low-5% from high

Planned sales

Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales

FiledSellerSharesValueSale datePast 3 months
Sep 14, 2026 ROBERT BALL
Officer, Director
10,175
0.05% of outstanding
$188kSep 14, 2026none
Aug 17, 2026 MATTHEW AHEARN
Director, Officer
22,500
0.11% of outstanding
$466kAug 17, 2026$374k
Jul 29, 2026 Gilde Healthcare Holding B.V.; Cooperatieve Gilde Healthcare V U.A.
10% Stockholder
200,000
0.96% of outstanding
$4.8MJul 29, 2026none
Jun 12, 2026 MATTHEW AHEARN
Director, Officer
20,000
0.10% of outstanding
$375kJun 12, 2026none

Transactions

The newest 50 of 129 rows filed, every code.

DateInsiderTransactionSharesPriceValueHoldings afterFiled
Oct 5, 2026Casey M Tansey
director, owner
AGrant or award
Common Stock
+733$19.60$14k53,4457 d ago
Oct 5, 2026Andrew Hykes
director
AGrant or award
Common Stock
+669$19.60$13k7,4387 d ago
Oct 5, 2026Paul Buckman
director
AGrant or award
Common Stock
+1,275$19.60$25k65,0257 d ago
Oct 5, 2026Kevin K. Sidow
director
AGrant or award
Common Stock
+892$19.60$17k25,9487 d ago
Sep 14, 2026Robert Joseph Ball
CEO & Executive Chairman
MOption exercise
Common Stock
+89,233$2.10$187k390,99929 d ago
Sep 14, 2026Robert Joseph Ball
CEO & Executive Chairman
SOpen-market sale
Common Stock
-10,175$18.45$188k380,82429 d ago
Sep 14, 2026Robert Joseph Ball
CEO & Executive Chairman
MOption exercise
Stock Optionderivative
-89,233$0.00$092,14329 d ago
Aug 26, 2026Gilde Healthcare Holding B.V.
owner
SOpen-market sale
Common Stockindirect: See footnote
-1,196$22.60$27k2,185,914Aug 28, 2026
Aug 20, 2026Gilde Healthcare Holding B.V.
owner
SOpen-market sale
Common Stockindirect: See footnote
-3,900$22.60$88k2,208,307Aug 24, 2026
Aug 21, 2026Gilde Healthcare Holding B.V.
owner
SOpen-market sale
Common Stockindirect: See footnote
-20,516$22.61$464k2,187,791Aug 24, 2026
Aug 24, 2026Gilde Healthcare Holding B.V.
owner
SOpen-market sale
Common Stockindirect: See footnote
-681$22.62$15k2,187,110Aug 24, 2026
Aug 14, 2026Matthew Fraser Ahearn
Chief Operating Officer
GGift
Common Stock10b5-1
-2,500$0.00$0266,676Aug 18, 2026
Aug 17, 2026Matthew Fraser Ahearn
Chief Operating Officer
SOpen-market sale
Common Stock10b5-1
-8,314$20.10$167k258,362Aug 18, 2026
Aug 18, 2026Matthew Fraser Ahearn
Chief Operating Officer
SOpen-market sale
Common Stock10b5-1
-12,586$20.94$263k245,776Aug 18, 2026
Aug 18, 2026Matthew Fraser Ahearn
Chief Operating Officer
SOpen-market sale
Common Stock10b5-1
-1,600$21.38$34k244,176Aug 18, 2026
Aug 5, 2026Gilde Healthcare Holding B.V.
owner
SOpen-market sale
Common Stockindirect: See footnote
-7,338$22.64$166k2,214,302Aug 7, 2026
Aug 6, 2026Gilde Healthcare Holding B.V.
owner
SOpen-market sale
Common Stockindirect: See footnote
-2,095$22.60$47k2,212,207Aug 7, 2026
Aug 3, 2026Gilde Healthcare Holding B.V.
owner
SOpen-market sale
Common Stockindirect: See footnote
-10,751$22.71$244k2,321,452Aug 5, 2026
Aug 4, 2026Gilde Healthcare Holding B.V.
owner
SOpen-market sale
Common Stockindirect: See footnote
-99,812$22.77$2.3M2,221,640Aug 5, 2026
Jul 30, 2026Gilde Healthcare Holding B.V.
owner
SOpen-market sale
Common Stockindirect: See Footnote
-28,245$23.36$660k2,352,237Aug 3, 2026
Jul 31, 2026Gilde Healthcare Holding B.V.
owner
SOpen-market sale
Common Stockindirect: See Footnote
-20,034$22.73$455k2,332,203Aug 3, 2026
Jun 26, 2026Paul Buckman
director
AGrant or award
Common Stock
+5,046$0.00$063,750Jun 29, 2026
Jun 26, 2026Richard Buchholz
director
AGrant or award
Common Stock
+5,046$0.00$018,712Jun 29, 2026
Jun 26, 2026Andrew Hykes
director
AGrant or award
Common Stock
+5,046$0.00$06,769Jun 29, 2026
Jun 26, 2026Casey M Tansey
director, owner
AGrant or award
Common Stock
+5,046$0.00$052,712Jun 29, 2026
Jun 26, 2026Kevin K. Sidow
director
AGrant or award
Common Stock
+5,046$0.00$025,056Jun 29, 2026
Jun 12, 2026Matthew Fraser Ahearn
Chief Operating Officer
SOpen-market sale
Common Stock10b5-1
-15,856$18.68$296k273,320Jun 16, 2026
Jun 15, 2026Matthew Fraser Ahearn
Chief Operating Officer
SOpen-market sale
Common Stock10b5-1
-1,644$18.20$30k271,676Jun 16, 2026
Jun 15, 2026Matthew Fraser Ahearn
Chief Operating Officer
SOpen-market sale
Common Stock10b5-1
-2,500$19.26$48k269,176Jun 16, 2026
Apr 30, 2026Robert Joseph Ball
CEO & Executive Chairman
MOption exercise
Common Stock
+10,000$2.48$25k300,018Apr 30, 2026
Apr 30, 2026Robert Joseph Ball
CEO & Executive Chairman
MOption exercise
Stock Optionderivative
-10,000$0.00$0309,756Apr 30, 2026
Apr 20, 2026Matthew Fraser Ahearn
Chief Operating Officer
MOption exercise
Common Stock
+7,421$2.48$18k272,522Apr 21, 2026
Apr 20, 2026Matthew Fraser Ahearn
Chief Operating Officer
MOption exercise
Common Stock
+14,243$2.86$41k286,765Apr 21, 2026
Apr 20, 2026Matthew Fraser Ahearn
Chief Operating Officer
MOption exercise
Stock Optionderivative
-7,421$0.00$08,864Apr 21, 2026
Apr 20, 2026Matthew Fraser Ahearn
Chief Operating Officer
MOption exercise
Stock Optionderivative
-14,243$0.00$042,731Apr 21, 2026
Mar 13, 2026Paul Buckman
director
MOption exercise
Common Stock
+19,401$2.48$48k39,505Mar 17, 2026
Mar 13, 2026Robert Joseph Ball
CEO & Executive Chairman
POpen-market purchase
Common Stock
+2,200$15.18$33k278,866Mar 17, 2026
Mar 13, 2026Richard Buchholz
director
POpen-market purchase
Common Stock
+1,000$14.84$15k13,666Mar 17, 2026
Mar 13, 2026Jeffrey S. Points
Chief Financial Officer
MOption exercise
Common Stock
+13,264$2.48$33k68,785Mar 17, 2026
Mar 13, 2026Paul Buckman
director
MOption exercise
Common Stock
+26,205$2.10$55k65,710Mar 17, 2026
Mar 13, 2026Jeffrey S. Points
Chief Financial Officer
POpen-market purchase
Common Stock
+2,000$15.00$30k70,785Mar 17, 2026
Mar 13, 2026Paul Buckman
director
FTax withholding
Common Stock
-3,292$14.62$48k62,418Mar 17, 2026
Mar 13, 2026Paul Buckman
director
FTax withholding
Common Stock
-3,714$14.82$55k58,704Mar 17, 2026
Mar 13, 2026Jeffrey S. Points
Chief Financial Officer
MOption exercise
Stock Optionderivative
-13,264$0.00$042,004Mar 17, 2026
Mar 13, 2026Paul Buckman
director
MOption exercise
Stock Optionderivative
-19,401$0.00$01,142Mar 17, 2026
Mar 13, 2026Paul Buckman
director
MOption exercise
Stock Optionderivative
-26,205$0.00$00Mar 17, 2026
Feb 6, 2026Robert Joseph Ball
CEO & Executive Chairman
MOption exercise
Common Stock
+10,000$2.48$25k274,604Feb 10, 2026
Feb 6, 2026Robert Joseph Ball
CEO & Executive Chairman
MOption exercise
Common Stock
+2,062$2.10$4,328276,666Feb 10, 2026
Feb 6, 2026Robert Joseph Ball
CEO & Executive Chairman
MOption exercise
Stock Optionderivative
-10,000$0.00$0319,756Feb 10, 2026
Feb 6, 2026Robert Joseph Ball
CEO & Executive Chairman
MOption exercise
Stock Optionderivative
-2,062$0.00$0181,376Feb 10, 2026
50 of 129 rows shown.

Insiders

Everyone who has filed a Form 4 here.

Questions about SI

Answered from the filings on this page, as of the latest one.

Are insiders buying SI?

As of Oct 6, 2026, SEC Form 4 filings show 0 open-market buys worth $0 by 0 insiders and 7 open-market sells worth $5.1M by 3 insiders at SHOULDER INNOVATIONS, INC. in the last 90 days, net -$5.1M. Only purchases (code P) and sales (code S) count; grants, option exercises and tax withholding do not.

Who was the last insider to trade SI on the open market?

Robert Joseph Ball (CEO & Executive Chairman) sold $188k of SI on Sep 14, 2026 and filed the Form 4 on Sep 14, 2026. InsiderTell scored 22 (weak).

How many insiders file Form 4 at SHOULDER INNOVATIONS, INC.?

12 people have filed a Form 4 at SHOULDER INNOVATIONS, INC., among them Matthew Fraser Ahearn (Chief Operating Officer), Paul Buckman (director), Robert Joseph Ball (CEO & Executive Chairman). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

SI insider trading: SHOULDER INNOVATIONS, INC. | InsiderTell