Comparable stake leader
Richard Ian Griffiths
SEC ownership of Silence Therapeutics plc
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001479615.
Disclosed value leader
Invus Global Management, LLC
Comparable rows
6/38
Latest evidence
05 Oct 2026
- Public ticker
- SLN on Nasdaq, SLNCF on OTC
- Parsed ownership sources
-
13D/G, 3/4/5, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Richard Ian Griffiths
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
6 of 38
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Richard Ian Griffiths
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
05 Oct 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001479615
- Issuer location
- London
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Silence Therapeutics plc (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Richard Ian Griffiths
Disclosed value leader
Invus Global Management, LLC
Comparable rows
6/38
Latest evidence
05 Oct 2026
13D/G
3/4/5
13F
Lead comparable stake: 8%
32 rows are not safely comparable across share classes.
13D/G row: Richard Ian Griffiths
Showing 1-8 of 38 holder rows.
Quick read
Richard Ian Griffiths leads the comparable SEC ownership view at 8%.
6 of 38 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Richard Ian Griffiths's linked filing trail.
Comparable ownership
Top 5
Richard Ian Griffiths
8%
FMR LLC
7.1%
Tetragon Financial Management LP
5.3%
Redmile Group, LLC
4.7%
Invus Global Management, LLC
4.6%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 38 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Richard Ian Griffiths |
13D/G
3/4/5
Richard Griffiths · 10%+ Owner
|
8%
Reported 13D/G
· 12 Aug 2026
|
—
14,391,498 shares
|
$0 | 12 Aug 2026 |
| FMR LLC |
13D/G
|
7.1%
Reported 13D/G
· 30 Sep 2026
|
—
13,180,206 shares
|
$0 | 30 Sep 2026 |
| Tetragon Financial Management LP |
13D/G
Tetragon Financial Group Limited
|
5.3%
Reported 13D/G
· 05 Oct 2026
|
—
9,878,565 shares
|
$0 | 05 Oct 2026 |
| Redmile Group, LLC |
13D/G
|
4.7%
Reported 13D/G
· 31 Mar 2025
|
—
6,644,841 shares
|
$0 | 31 Mar 2025 |
| Invus Global Management, LLC |
13D/G
Raymond Debbane
|
4.6%
Reported 13D/G
· 30 Sep 2026
|
$94,693,159
8,663,601 shares
|
-$13,888,893 | 30 Sep 2026 |
| Lombard Odier Asset Management (USA) Corp |
13D/G
|
4.2%
Reported 13D/G
· 31 Dec 2025
|
—
5,935,955 shares
|
$0 | 31 Dec 2025 |
| Siren, L.L.C. |
13F
Individual
|
—
denominator unverified
|
$31,564,386
2,887,867 shares
|
— | 30 Sep 2026 |
| MORGAN STANLEY |
13F
Company
|
—
denominator unverified
|
$19,248,057
1,761,030 shares
|
— | 30 Sep 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
No eligible buy or sell activity is available for this window. No eligible Buy or Sell transactions are available in this dataset since 15 Nov 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-9 of 9 reporting-owner rows connected to Silence Therapeutics plc. Open a relationship link for the CIK-to-CIK filing trail.
Rows
9
Largest Forms 3/4/5 holder
Steven J. Romano
Net 12M change
$0
Latest report
10 Aug 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Steven J. Romano | EVP and Chief R&D Officer | Mixed | 02 Jan 2026 | |||
| David Lemus | Director | Mixed | 02 Jan 2026 | |||
| Rhonda Lynette Hellums | Chief Financial Officer, Director | Mixed | 02 Jan 2026 | |||
| Michael H. Davidson | Director | Mixed | 02 Jan 2025 | |||
| James Ede-Golightly | Director | Mixed | 02 Jan 2026 | |||
| Iain Ross | Interim PEO, Director | Mixed | 18 Dec 2025 | |||
| Craig A. Tooman | President and CEO, Director | Mixed | 02 Jan 2025 | |||
| Timothy Mcinerney | Director | Mixed | 02 Jan 2026 | |||
| Richard Ian Griffiths | 10%+ Owner | Mixed | 10 Aug 2026 |
Recent insider transactions for Silence Therapeutics plc
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Richard Ian Griffiths | SLN | American Depositary Shares | Sale | 273.6% | 5,484,320 | 7,488,660 | 10 Aug 2026 | See footnote | ||
| Richard Ian Griffiths | SLN | American Depositary Shares | Sale | 9.19% | 865,112 | 10,281,486 | 06 Jul 2026 | See footnote | ||
| Richard Ian Griffiths | SLN | American Depositary Shares | Sale | 0.45% | 50,082 | 11,146,598 | 02 Jul 2026 | See footnote | ||
| Richard Ian Griffiths | SLN | American Depositary Shares | Sale | 1.16% | 129,180 | 11,246,680 | 01 Jul 2026 | See footnote | ||
| Richard Ian Griffiths | SLN | American Depositary Shares | Sale | 1.52% | 169,928 | 11,325,860 | 30 Jun 2026 | See footnote | ||
| Richard Ian Griffiths | SLN | American Depositary Shares | Sale | 2.96% | 330,072 | 11,495,788 | 29 Jun 2026 | See footnote | ||
| James Ede-Golightly | SLN | Share Option (Right to Buy) | Award | 90,000 | 90,000 | 02 Jan 2026 | Direct | |||
| Timothy Mcinerney | SLN | Share Option (Right to Buy) | Award | 90,000 | 90,000 | 02 Jan 2026 | Direct | |||
| Steven J. Romano | SLN | Employee Share Option (Right to Buy) | Award | 300,000 | 300,000 | 02 Jan 2026 | Direct | |||
| Rhonda Lynette Hellums | SLN | Employee Share Option (Right to Buy) | Award | 375,000 | 375,000 | 02 Jan 2026 | Direct | |||
| David Lemus | SLN | Share Option (Right to Buy) | Award | 90,000 | 90,000 | 02 Jan 2026 | Direct | |||
| James Ede-Golightly | SLN | Share Option (Right to Buy) | Award | 90,000 | 90,000 | 22 Dec 2025 | Direct | |||
| Iain Ross | SLN | Employee Share Option (Right to Buy) | Award | 900,000 | 900,000 | 18 Dec 2025 | Direct |
* marks a reported price that did not pass the local price check.