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
50/50
Latest evidence
12 Aug 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
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Richard Ian Griffiths
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
12 Aug 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
50/50
Latest evidence
12 Aug 2026
13D/G
3/4/5
13F
Lead comparable stake: 8%
13D/G row: Richard Ian Griffiths
Showing 1-8 of 50 holder rows.
Quick read
Richard Ian Griffiths leads the comparable SEC ownership view at 8%.
50 of 50 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%
Invus Global Management, LLC
7%
Redmile Group, LLC
4.7%
Lombard Odier Asset Management (U...
4.2%
Siren, L.L.C.
2.3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Richard Ian Griffiths |
13D/G
3/4/5
Richard Griffiths · 10%+ Owner
|
8%
|
—
14,391,498 shares
|
$0 | 12 Aug 2026 |
| Invus Global Management, LLC |
13D/G
Raymond Debbane
|
7%
|
$90,302,914
9,934,314 shares
|
$0 | 30 Jun 2026 |
| Redmile Group, LLC |
13F
13D/G
Company
|
4.7%
from 13D/G
|
$23,769,251
2,164,777 shares
|
— | 30 Jun 2026 |
| Lombard Odier Asset Management (USA) Corp |
13D/G
|
4.2%
|
—
5,935,955 shares
|
$0 | 31 Dec 2025 |
| Siren, L.L.C. |
13F
Individual
|
2.3%
|
$36,359,589
3,311,438 shares
|
— | 30 Jun 2026 |
| TCG Crossover Management, LLC |
13F
Company
|
2.1%
|
$33,308,489
3,033,560 shares
|
— | 30 Jun 2026 |
| Nantahala Capital Management, LLC |
13F
Company
|
0.95%
|
$14,787,106
1,346,731 shares
|
— | 30 Jun 2026 |
| CITADEL ADVISORS LLC |
13F
Company
|
0.94%
|
$14,599,282
1,329,625 shares
|
— | 30 Jun 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
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 28 Aug 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 | |||
| Richard Ian Griffiths | SLN | American Depositary Shares | Purchase | 0.02% | 2,000 | 11,825,861 | 27 Oct 2025 | See footnote | ||
| Richard Ian Griffiths | SLN | American Depositary Shares | Sale | 0.02% | 2,000 | 11,819,861 | 27 Oct 2025 | See footnote |
* marks a reported price that did not pass the local price check.