Silence Therapeutics plc (SLN)
Data as of , from SEC Form 4 filings.
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About Silence Therapeutics plc (SLN)
Silence Therapeutics PLC is a biotechnology company focused on discovering and developing novel molecules incorporating short-interfering ribonucleic acid or siRNA. Using its mRNAi GOLD platform, the company has generated siRNA product candidates both for its internal development pipeline as well as for out-licensed programs with third-party collaborators. Its wholly owned pipeline is focused on three therapeutic areas: cardiovascular disease, hematology, and rare diseases. The different product candidates in its pipeline are Divesiran (SLN124), a siRNA product candidate that has the potential to treat several hematological disorders; Zerlasiran (SLN360), being developed as a potential treatment to reduce cardiovascular issues; SLN-312; SLN-548; and multiple other programs.
- LONDON
- 88
- 2020
- XNAS
https://www.silence-therapeutics.comSEC filings for SLN on EDGAR
SLN Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 11 | 5,484,320 | - |
SLN insider transactions (Form 4)
339 Form 4 filings on record, the earliest from May 5, 2025, newest first.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 2,792,826 | - footnote F1 | - | |
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 100,000 | - footnote F1 | - | |
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 50,000 | - footnote F1 | - | |
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 3,500 | - footnote F1 | - | |
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 800,000 | - footnote F1 | - | |
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 382,000 | - footnote F1 | - | |
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 470,820 | - footnote F1 | - | |
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 605,174 | - footnote F1 | - | |
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 120,000 | - footnote F1 | - | |
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 60,000 | - footnote F1 | - | |
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 100,000 | - footnote F1 | - | |
| ||||||
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 330,072 | - footnote F1 | - | |
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 169,928 | - footnote F1 | - | |
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 79,180 | - footnote F1 | - | |
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 50,000 | - footnote F1 | - | |
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 50,082 | - footnote F1 | - | |
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 865,112 | - footnote F1 | - | |
| ||||||
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 20,000 | - footnote F1 | - | |
| Richard Ian Griffiths - 10% Owner | Open-market purchase | American Depositary Shares | 20,000 | - footnote F1 | - | |
| Richard Ian Griffiths - 10% Owner | Open-market sale | American Depositary Shares | 2,000 | - footnote F1 | - | |
| Richard Ian Griffiths - 10% Owner | Open-market purchase | American Depositary Shares | 2,000 | - footnote F1 | - | |
| ||||||
| Richard Ian Griffiths - 10% Owner | Open-market purchase | American Depositary Shares | 14,342 | - | - | |
| Richard Ian Griffiths - 10% Owner | Open-market purchase | American Depositary Shares | 4,034 | - | - | |
| Richard Ian Griffiths - 10% Owner | Open-market purchase | American Depositary Shares | 14,559 | - | - | |
| Richard Ian Griffiths - 10% Owner | Open-market purchase | American Depositary Shares | 8,923 | - | - | |
| Richard Ian Griffiths - 10% Owner | Open-market purchase | American Depositary Shares | 22,435 | - | - | |
| Richard Ian Griffiths - 10% Owner | Open-market purchase | American Depositary Shares | 2,910 | - | - | |
| Richard Ian Griffiths - 10% Owner | Open-market purchase | American Depositary Shares | 28,000 | - | - | |
| Richard Ian Griffiths - 10% Owner | Open-market purchase | American Depositary Shares | 43,293 | - | - | |
| Richard Ian Griffiths - 10% Owner | Open-market purchase | American Depositary Shares | 7,937 | - | - | |
| Richard Ian Griffiths - 10% Owner | Open-market purchase | American Depositary Shares | 24,387 | - | - | |
| Richard Ian Griffiths - 10% Owner | Open-market purchase | American Depositary Shares | 30,133 | - | - | |
| Timothy McInerney | Grant or award | Share Option (Right to Buy) | 48,000 | $0.00 | - | |
SLN insider trading FAQ
What is the latest insider trade for SLN?
Silence Therapeutics plc (SLN) had 1 insider filing in the last 90 days, with the most recent on 2026-08-13. The full record for SLN runs to 9 Form 4 filings, the earliest from 2025-05-05. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying SLN stock?
No insider purchases of SLN were filed in the last 90 days. 13 purchases are on record for this company.
How many insiders are selling SLN stock?
11 insider sales of SLN were filed in the last 90 days.
Where can I see SLN SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects SLN Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Health Care companies with insider activity
Recent insider filings
9The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Richard Ian Griffiths view on EDGAR
- - Richard Ian Griffiths view on EDGAR
- - Richard Ian Griffiths view on EDGAR
- - Richard Ian Griffiths view on EDGAR
- - Richard Ian Griffiths view on EDGAR
- - Richard Ian Griffiths view on EDGAR
- - Richard Ian Griffiths view on EDGAR
- - Richard Ian Griffiths view on EDGAR
- - Timothy McInerney view on EDGAR
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Learn more
- Insider selling: signal or noise?
- Why most insider sales are routine, and the few patterns worth a second look.
- Insider activity in Health Care
- Where SLN's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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