SI
SHOULDER (SI)
NYSE
$18.52-$0.02 (-0.08%)
Price as of Sep 11, 2026 7:46 PM EDT
  • $385.8M
    Market Cap
  • 17.95%
    1-Year Change
  • N/A
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
FMR LLC
17.72%
3.7M
-110,592 (-3.01%)
Jun 30, 2026
BLOCK.ONE
12.35%
2.6M
+2.6M (+100.00%)
Dec 31, 2022
BLACKROCK INC.
11.02%
2.3M
+173,408 (+7.59%)
Dec 31, 2022
MILLER VALUE PARTNERS, LLC
6.87%
1.4M
+1.2M (+81.76%)
Dec 31, 2022
ANSON FUNDS MANAGEMENT LP
5.38%
1.1M
+1.1M (+100.00%)
Dec 31, 2022
ZEVENBERGEN CAPITAL INVESTMENTS LLC
4.38%
908,697
+82,012 (+9.03%)
Sep 30, 2022
TWO SIGMA INVESTMENTS, LP
3.15%
653,786
+588,799 (+90.06%)
Dec 31, 2022

Current Ownership Distribution

  • Institutions160.6M (61.44%)
  • Mutual Funds97.4M (37.27%)
  • Insiders3.4M (1.29%)
  • Other0 (0.00%)

Insider Transactions

  • 1.29% (3.4M)
    Current InsiderOwnership (%, shares)
  • 2
    Number of InsiderBuying (last 12 months)
  • $1.2M
    Amount of InsiderBuying (last 12 months)
  • 2
    Number of InsiderSelling (last 12 months)
  • $386.9M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Gilde Healthcare Holding B.V.
Sell
Aug 26, 2026
$27,029.60
1,196
$22.60
2.2M
Ahearn Matthew Fraser
Chief Operating Officer
Sell
Aug 18, 2026
$263,492.94
12,586
$20.94
245,776
Ahearn Matthew Fraser
Chief Operating Officer
Sell
Aug 18, 2026
$34,211.04
1,600
$21.38
244,176
Ahearn Matthew Fraser
Chief Operating Officer
Sell
Aug 17, 2026
$167,101.42
8,314
$20.10
258,362
Ahearn Matthew Fraser
Chief Operating Officer
Gift
Aug 14, 2026
$0.00
2,500
$0.00
266,676
Gilde Healthcare Holding B.V.
Sell
Aug 06, 2026
$47,347.00
2,095
$22.60
2.2M
Gilde Healthcare Holding B.V.
Sell
Aug 05, 2026
$166,132.32
7,338
$22.64
2.2M
Gilde Healthcare Holding B.V.
Sell
Aug 04, 2026
$2.3M
99,812
$22.77
2.2M
Gilde Healthcare Holding B.V.
Sell
Aug 03, 2026
$244,155.21
10,751
$22.71
2.3M
Gilde Healthcare Holding B.V.
Sell
Jul 31, 2026
$455,372.82
20,034
$22.73
2.3M
Gilde Healthcare Holding B.V.
Sell
Jul 30, 2026
$659,803.20
28,245
$23.36
2.4M
BUCKMAN PAUL
Award
Jun 26, 2026
$0.00
5,046
$0.00
63,750
Buchholz Richard
Award
Jun 26, 2026
$0.00
5,046
$0.00
18,712
Sidow Kevin K.
Award
Jun 26, 2026
$0.00
5,046
$0.00
25,056
Ahearn Matthew Fraser
Chief Operating Officer
Sell
Jun 15, 2026
$29,921.62
1,644
$18.20
271,676
Ahearn Matthew Fraser
Chief Operating Officer
Sell
Jun 15, 2026
$48,148.00
2,500
$19.26
269,176
Ahearn Matthew Fraser
Chief Operating Officer
Sell
Jun 12, 2026
$296,185.32
15,856
$18.68
273,320
Buchholz Richard
Buy
Mar 13, 2026
$14,840.00
1,000
$14.84
13,666
Points Jeffrey S.
Chief Financial Officer
Exempt
Mar 13, 2026
$0.00
13,264
$0.00
42,004
BUCKMAN PAUL
Exempt
Mar 13, 2026
$0.00
19,401
$0.00
1,142
Points Jeffrey S.
Chief Financial Officer
Exempt
Mar 13, 2026
$32,900.03
13,264
$2.48
68,785
BUCKMAN PAUL
Exempt
Mar 13, 2026
$0.00
26,205
$0.00
0
Points Jeffrey S.
Chief Financial Officer
Buy
Mar 13, 2026
$30,000.00
2,000
$15.00
70,785
BUCKMAN PAUL
Exempt
Mar 13, 2026
$48,122.24
19,401
$2.48
39,505
BUCKMAN PAUL
Exempt
Mar 13, 2026
$54,999.05
26,205
$2.10
65,710
BUCKMAN PAUL
In Kind
Mar 13, 2026
$48,129.04
3,292
$14.62
62,418
BUCKMAN PAUL
In Kind
Mar 13, 2026
$55,041.48
3,714
$14.82
58,704
Ball Robert Joseph
CEO & Executive Chairman
Exempt
Feb 06, 2026
$0.00
10,000
$0.00
319,756
Ball Robert Joseph
CEO & Executive Chairman
Exempt
Feb 06, 2026
$0.00
2,062
$0.00
181,376
Ball Robert Joseph
CEO & Executive Chairman
Exempt
Feb 06, 2026
$24,804.00
10,000
$2.48
274,604