Skip to main content
SLN
NASDAQ Life Sciences

Controlling Shareholder Richard Griffiths Reduces Stake to 21.7% After $16.3M Sales

Arie Shkolnikov · Analysis by Wiseek AI
More coverage: Biotech Stocks · Healthcare
Sentiment info
Negative
Importance info
8
Price
$10
Mkt Cap
$479.431M
52W Low
$4.19
52W High
$11.06
52W Position info
139% above low
Off High info
9.6% below high
Rel. Volume info
1.5× avg
Market data snapshot near publication time

SLN has more than doubled off its 52-week low of $4.19.

Summary

Controlling shareholder Richard Griffiths sold $16.3 million in ADSs, decreasing his stake to 21.7% of Silence Therapeutics plc, following recent share capital increases.


Key Events · Ownership and Investor Activity · SLN

  • Significant Insider Sales

    Richard Griffiths, a controlling shareholder and director, sold 1,544,374 ADSs for aggregate proceeds of $16.3 million in open market transactions between June 29 and July 6, 2026.

  • Reduced Ownership Stake

    Following these sales and dilution from an increase in the company's share capital, Mr. Griffiths' aggregate ownership (including controlled entities) has decreased to 30,844,458 ordinary shares, representing 21.7% of the company's outstanding shares.

  • Follows Recent ATM Program

    This reduction in stake by a major shareholder occurs after the company recently activated a $100 million At-The-Market (ATM) offering program in late May, which also contributes to potential share dilution.


Analysis · SLN · Life Sciences

Richard Griffiths, a controlling shareholder and director, reported selling $16.3 million worth of ADSs, reducing his aggregate ownership to 21.7%. This significant reduction in stake by a key insider, combined with dilution from recent share capital increases and the company's active ATM program, indicates a notable shift in his investment position and could contribute to market overhang.

At the time of this filing, SLN was trading at $10.00 on NASDAQ in the Life Sciences sector, with a market capitalization of approximately $479.4M. The 52-week trading range was $4.19 to $11.06. This filing was assessed with negative market sentiment and an importance score of 8 out of 10.

View Main SEC Filing

Price Chart

Share this article

Copied!

SLN - Latest Insights

SLN
Jul 08, 2026, 7:00 AM EDT
Filing Type: SCHEDULE 13D/A
Importance Score:
8
Price at Filing: $10.00
Real-time Price: $9.55 info
Change: -$0.450 (-4%) info
Market Cap: $479.431M info
SLN
Jul 07, 2026, 9:09 AM EDT
Filing Type: 4
Importance Score:
7
Price at Filing: $10.65
Real-time Price: $9.55 info
Change: -$1.10 (-10%) info
Market Cap: $479.431M info
SLN
Jun 23, 2026, 4:35 PM EDT
Filing Type: 8-K
Importance Score:
7
Price at Filing: $7.27
Real-time Price: $9.55 info
Change: +$2.28 (+31%) info
Market Cap: $479.431M info
SLN
Jun 11, 2026, 7:35 AM EDT
Filing Type: 8-K
Importance Score:
8
Price at Filing: $6.68
Real-time Price: $9.55 info
Change: +$2.88 (+43%) info
Market Cap: $479.431M info
SLN
May 27, 2026, 4:53 PM EDT
Filing Type: 424B5
Importance Score:
8
Price at Filing: $6.80
Real-time Price: $9.55 info
Change: +$2.75 (+40%) info
Market Cap: $479.431M info
SLN
May 18, 2026, 5:00 PM EDT
Filing Type: 8-K
Importance Score:
8
Price at Filing: $6.23
Real-time Price: $9.55 info
Change: +$3.32 (+53%) info
Market Cap: $479.431M info
SLN
May 18, 2026, 4:07 PM EDT
Filing Type: S-3
Importance Score:
7
Price at Filing: $6.23
Real-time Price: $9.55 info
Change: +$3.32 (+53%) info
Market Cap: $479.431M info
SLN
May 07, 2026, 8:22 AM EDT
Filing Type: 10-Q
Importance Score:
8
Price at Filing: $7.36
Real-time Price: $9.55 info
Change: +$2.19 (+30%) info
Market Cap: $479.431M info
SLN
May 07, 2026, 8:15 AM EDT
Filing Type: 8-K
Importance Score:
7
Price at Filing: $7.36
Real-time Price: $9.55 info
Change: +$2.19 (+30%) info
Market Cap: $479.431M info
SLN
Mar 05, 2026, 7:49 AM EST
Filing Type: 10-K
Importance Score:
9
Price at Filing: $5.60
Real-time Price: $9.55 info
Change: +$3.95 (+71%) info
Market Cap: $479.431M info