Griffiths Richard Ian

10% owner at Silence Therapeutics plc · on record since Mar 31, 2025

Insider trading activity of Griffiths Richard Ian

Transactions on record: 82; since Feb 25, 2025

Open-market buys: 0

Open-market sells: 0

Companies traded: 1; last filing Aug 13, 2026

Figures computed from official regulatory filings — .

Companies where Griffiths Richard Ian has traded

Silence Therapeutics plc82 tx · Aug 13, 2026

Track record of Griffiths Richard Ian

Statistical track record

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Open-market buys: 63

Last buy: Oct 27, 2025

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Transaction history of Griffiths Richard Ian

Co-insiders of Griffiths Richard Ian

Davidson Michael H.Silence Therapeutics plc
Ede-Golightly JamesSilence Therapeutics plc
HELLUMS RHONDA LYNETTESilence Therapeutics plc
Lemus DavidSilence Therapeutics plc
MCINERNEY TIMOTHYSilence Therapeutics plc
Romano Steven J.Silence Therapeutics plc
Ross IainSilence Therapeutics plc
TOOMAN CRAIG ASilence Therapeutics plc

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Company	Filed	Type	Qty	Price	Value · USD	Src
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	3,500	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	470,820	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	2,792,826	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	605,174	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	120,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	382,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	800,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	100,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	50,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	100,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	60,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Jul 7, 2026	SellD (derivative)	330,072	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Jul 7, 2026	SellD (derivative)	169,928	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Jul 7, 2026	SellD (derivative)	865,112	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Jul 7, 2026	SellD (derivative)	50,082	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Jul 7, 2026	SellD (derivative)	79,180	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Jul 7, 2026	SellD (derivative)	50,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Feb 13, 2026	SellD (derivative)	20,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Feb 13, 2026	SellD (derivative)	2,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Feb 13, 2026	BuyD (derivative)	20,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Feb 13, 2026	BuyD (derivative)	2,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 4, 2025	BuyD (derivative)	14,342	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 4, 2025	BuyD (derivative)	4,034	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Jul 31, 2025	BuyD (derivative)	14,559	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Jul 31, 2025	BuyD (derivative)	8,923	—	n/a (No price was disclosed in the filing)	SEC

Company	Filed	Type	Qty	Price	Value · USD	Src
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	3,500	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	470,820	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	2,792,826	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	605,174	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	120,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	382,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	800,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	100,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	50,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	100,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 13, 2026	SellD (derivative)	60,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Jul 7, 2026	SellD (derivative)	330,072	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Jul 7, 2026	SellD (derivative)	169,928	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Jul 7, 2026	SellD (derivative)	865,112	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Jul 7, 2026	SellD (derivative)	50,082	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Jul 7, 2026	SellD (derivative)	79,180	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Jul 7, 2026	SellD (derivative)	50,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Feb 13, 2026	SellD (derivative)	20,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Feb 13, 2026	SellD (derivative)	2,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Feb 13, 2026	BuyD (derivative)	20,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Feb 13, 2026	BuyD (derivative)	2,000	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 4, 2025	BuyD (derivative)	14,342	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Aug 4, 2025	BuyD (derivative)	4,034	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Jul 31, 2025	BuyD (derivative)	14,559	—	n/a (No price was disclosed in the filing)	SEC
Silence Therapeutics plcListing on record	Jul 31, 2025	BuyD (derivative)	8,923	—	n/a (No price was disclosed in the filing)	SEC