Silence Therapeutics PLC

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Silence Therapeutics PLC
TickerSLN
CIK #0001479615
CUSIP82686Q101
SectorLife Sciences - Pharmaceutical Preparations
Address72 Hammersmith Road, London, W14 8TH
Source [EDGAR]
Reg D Offering (Form D) Filed Raised Terms
Silence Therapeutics PLC 2021-02-18 45.5 M Exemption: 506(b) · Duration: One year or less · Commission: $2,730,000 · Revenue: Decline to Disclose
CIK Filing 2011 - 2026
[0001479615] 10-K
[0001479615] 10-Q
[0001479615] 3
[0001479615] 4
[0001479615] 6-K
[0001479615] 8-K
[0001479615] D
[0001479615] SC 13D
[0001479615] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Redmile Group LLC Silence Therapeutics PLC [2025-02-14] 0.0
Artal International SCA Silence Therapeutics PLC [2023-09-01] 6.8
Deep Track Capital LP Silence Therapeutics PLC [2022-08-22] 5.44
TCG Crossover Management LLC Silence Therapeutics PLC [2022-08-19] 5.9
Griffiths Richard Ian Silence Therapeutics PLC [2022-06-15] 27.0
Griffiths Richard Ian Silence Therapeutics PLC [2022-02-14] 23.05
Quested Robert Silence Therapeutics PLC [2022-02-14] 7.81
Mallinckrodt PLC Silence Therapeutics PLC [2022-02-07] 5.64
Goldman Sachs Group Inc Silence Therapeutics PLC [2022-01-27] 5.4
Keith Robert Napier Silence Therapeutics PLC [2021-02-17] 13.7
Quested Robert Silence Therapeutics PLC [2021-02-17] 8.5
Griffiths Richard Ian Silence Therapeutics PLC [2021-02-17] 23.3
Lombard Odier Asset Management USA Corp Silence Therapeutics PLC [2021-02-16] 12.2
Silence Therapeutics PLC Arrowhead Pharmaceuticals Inc [2017-12-01] 6.4
Silence Therapeutics PLC Arrowhead Pharmaceuticals Inc [2017-01-13] 0.21
Form 3/4/5 Filer 2011 - 2026
Griffiths Richard Ian
Silence Therapeutics PLC
Hellums Rhonda Lynette
Lemus David
Ede-Golightly James
Romano Steven J
McInerney Timothy
Ross Iain
Tooman Craig A
Davidson Michael H
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Romano Steven J
Employee Share Option (Right to Buy) · derivative
2026-01-02 Grant 300,000 $0.00
Lemus David
Share Option (Right to Buy) · derivative
2026-01-02 Grant 90,000 $0.00
Hellums Rhonda Lynette
Employee Share Option (Right to Buy) · derivative
2026-01-02 Grant 375,000 $0.00
Ede-Golightly James
Share Option (Right to Buy) · derivative
2026-01-02 Grant 90,000 $0.00
McInerney Timothy
Share Option (Right to Buy) · derivative
2026-01-02 Grant 90,000 $0.00
Ede-Golightly James
Share Option (Right to Buy) · derivative
2025-12-22 Grant 90,000 $0.00
Ross Iain
Employee Share Option (Right to Buy) · derivative
2025-12-18 Grant 900,000 $0.00
Griffiths Richard Ian
American Depositary Shares · derivative
2025-10-27 Sell 2,000
Griffiths Richard Ian
American Depositary Shares · derivative
2025-10-27 Buy 2,000
Griffiths Richard Ian
American Depositary Shares · derivative
2025-08-03 Sell 20,000
Griffiths Richard Ian
American Depositary Shares · derivative
2025-08-03 Buy 20,000
Griffiths Richard Ian
American Depositary Shares · derivative
2025-08-01 Buy 4,034
Griffiths Richard Ian
American Depositary Shares · derivative
2025-07-31 Buy 14,342
Griffiths Richard Ian
American Depositary Shares · derivative
2025-07-30 Buy 8,923
Griffiths Richard Ian
American Depositary Shares · derivative
2025-07-29 Buy 14,559
Griffiths Richard Ian
American Depositary Shares · derivative
2025-07-22 Buy 2,910
Griffiths Richard Ian
American Depositary Shares · derivative
2025-07-21 Buy 22,435
Griffiths Richard Ian
American Depositary Shares · derivative
2025-07-15 Buy 43,293
Griffiths Richard Ian
American Depositary Shares · derivative
2025-07-11 Buy 28,000
Griffiths Richard Ian
American Depositary Shares · derivative
2025-07-09 Buy 30,133
showing 20 of 80 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 56 19,959,895
2025-12-31 58 18,302,701
2025-09-30 54 19,712,219
2025-06-30 55 19,746,953
2025-03-31 60 21,913,387
2024-12-31 66 24,805,394
2024-09-30 70 27,509,798
2024-06-30 72 28,558,056
2024-03-31 65 28,218,857
2023-12-31 35 20,602,878
2023-09-30 29 19,721,335
2023-06-30 30 19,229,837
Form 13F Holdings
Firm Period DFND Voting Shares
Gamma Investing LLC [2026-06-30] DFND 11,063 11,063
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