SLN
SILENCE THER SP ADR (SLN)
NASDAQ
$13.35+$0.08 (+0.60%)
Price as of Aug 21, 2026 7:30 PM EDT
  • $824.8M
    Market Cap
  • 148.04%
    1-Year Change
  • Biotechnology
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
TCG CROSSOVER MANAGEMENT, LLC
6.42%
3.0M
0 (0.00%)
Mar 31, 2026
SIREN, L.L.C.
6.16%
2.9M
0 (0.00%)
Mar 31, 2026
REDMILE GROUP, LLC
4.58%
2.2M
0 (0.00%)
Mar 31, 2026
NANTAHALA CAPITAL MANAGEMENT, LLC
4.54%
2.1M
+604,304 (+28.15%)
Mar 31, 2026
MILLENNIUM MANAGEMENT LLC
2.27%
1.1M
+414,599 (+38.60%)
Mar 31, 2026
GREAT POINT PARTNERS LLC
2.16%
1.0M
+212,457 (+20.82%)
Mar 31, 2026
NEXTECH INVEST LTD.
2.02%
952,400
0 (0.00%)
Dec 31, 2024

Current Ownership Distribution

  • Institutions353.4M (93.57%)
  • Mutual Funds14.0M (3.70%)
  • Insiders10.3M (2.72%)
  • Other0 (0.00%)

Insider Transactions

  • 2.72% (10.3M)
    Current InsiderOwnership (%, shares)
  • 1
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 1
    Number of InsiderSelling (last 12 months)
  • $0.00
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Griffiths Richard Ian
Sell
Aug 10, 2026
$0.00
2.8M
$0.00
7.5M
Griffiths Richard Ian
Sell
Aug 10, 2026
$0.00
100,000
$0.00
7.4M
Griffiths Richard Ian
Sell
Aug 10, 2026
$0.00
50,000
$0.00
7.3M
Griffiths Richard Ian
Sell
Aug 10, 2026
$0.00
3,500
$0.00
7.3M
Griffiths Richard Ian
Sell
Aug 10, 2026
$0.00
800,000
$0.00
6.5M
Griffiths Richard Ian
Sell
Aug 10, 2026
$0.00
382,000
$0.00
6.2M
Griffiths Richard Ian
Sell
Aug 10, 2026
$0.00
470,820
$0.00
5.7M
Griffiths Richard Ian
Sell
Aug 10, 2026
$0.00
605,174
$0.00
5.1M
Griffiths Richard Ian
Sell
Aug 10, 2026
$0.00
120,000
$0.00
5.0M
Griffiths Richard Ian
Sell
Aug 10, 2026
$0.00
60,000
$0.00
4.9M
Griffiths Richard Ian
Sell
Aug 10, 2026
$0.00
100,000
$0.00
4.8M
Griffiths Richard Ian
Sell
Jul 06, 2026
$0.00
865,112
$0.00
10.3M
Griffiths Richard Ian
Sell
Jul 02, 2026
$0.00
50,082
$0.00
11.1M
Griffiths Richard Ian
Sell
Jul 01, 2026
$0.00
79,180
$0.00
11.2M
Griffiths Richard Ian
Sell
Jul 01, 2026
$0.00
50,000
$0.00
11.2M
Griffiths Richard Ian
Sell
Jun 30, 2026
$0.00
169,928
$0.00
11.3M
Griffiths Richard Ian
Sell
Jun 29, 2026
$0.00
330,072
$0.00
11.5M
MCINERNEY TIMOTHY
Award
Jan 02, 2026
$0.00
90,000
$0.00
90,000
Romano Steven J.
EVP and Chief R&D Officer
Award
Jan 02, 2026
$0.00
300,000
$0.00
300,000
Ede-Golightly James
Award
Jan 02, 2026
$0.00
90,000
$0.00
90,000
Lemus David
Award
Jan 02, 2026
$0.00
90,000
$0.00
90,000
HELLUMS RHONDA LYNETTE
Chief Financial Officer
Award
Jan 02, 2026
$0.00
375,000
$0.00
375,000
Ede-Golightly James
Award
Dec 22, 2025
$0.00
90,000
$0.00
90,000
Ross Iain
Interim PEO
Award
Dec 18, 2025
$0.00
900,000
$0.00
900,000
Griffiths Richard Ian
Sell
Oct 27, 2025
$0.00
2,000
$0.00
11.8M
Griffiths Richard Ian
Buy
Oct 27, 2025
$0.00
2,000
$0.00
11.8M
Griffiths Richard Ian
Sell
Aug 03, 2025
$0.00
20,000
$0.00
11.8M
Griffiths Richard Ian
Buy
Aug 03, 2025
$0.00
20,000
$0.00
11.8M
Griffiths Richard Ian
Buy
Jul 30, 2025
$0.00
8,923
$0.00
11.8M
Griffiths Richard Ian
Buy
Jul 29, 2025
$0.00
14,559
$0.00
11.8M