| $385M | ||
| $350M | ||
| $215M | ||
| $100M | ||
| $88M | ||
| $62M |
Buys | $9,336,164 | 51 | 96 |
Sells | $124,500 | 2 | 4 |
| Griffiths Richard Ian | 10 percent owner | 51 | $9.34M | 2 | $124,500 | $9.21M |
Silence Therapeutics plc, a biotechnology company, focuses on the discovery and development of novel ribonucleic acid (RNA) therapeutics in hematology, cardiovascular, and other rare and metabolic indications. The company's platform includes mRNAi GalNAc Oligonucleotide Discovery platform designed to accurately target specific disease-associated genes in the liver. It designs short interfering RNA molecules to harness the body's natural mechanism of RNA interference, and degrading messenger RNA molecules that encode specific targeted disease-associated proteins in a cell. The company is developing various product candidates, including SLN360, which is Phase I clinical trials for the treatment of cardiovascular disease with high lipoprotein; SLN124 that is in Phase I clinical trials for the treatment of non-transfusion dependent thalassemia, and Phase I clinical trials for the treatment of myelodysplastic syndrome; and SLN124 for the treatment of polycythemia vera. It has collaboration agreements with AstraZeneca PLC to discover, develop, and commercialize small interfering RNA therapeutics for the treatment of cardiovascular, renal, metabolic, and respiratory diseases; and Mallinckrodt Pharma IP Trading DAC to develop and commercialize RNAi drug targets designed to silence the complement cascade in complement-mediated disorders. The company also has a collaboration with Hansoh Pharmaceutical Group Company Limited to develop siRNAs for three undisclosed targets leveraging Silence's mRNAi GOLD platform. The company was formerly known as SR Pharma plc and changed its name to Silence Therapeutics plc in May 2007. Silence Therapeutics plc is headquartered in London, the United Kingdom.
Over the last 12 months, insiders at Silence Therapeutics plc have bought $9.34M and sold $124,500 worth of Silence Therapeutics plc stock.
On average, over the past 5 years, insiders at Silence Therapeutics plc have bought $5.84M and sold $124,500 worth of stock each year.
Highest buying activity among insiders over the last 12 months: Griffiths Richard Ian (10 percent owner) — $9.34M.
The last purchase of 2,000 shares for transaction amount of $15,500 was made by Griffiths Richard Ian (10 percent owner) on 2025‑10‑27.
| 2025-10-27 | Sale | Griffiths Richard Ian | 10 percent owner | 2,000 0.0057% | $7.75 | $15,500 | -13.17% | |
| 2025-10-27 | Griffiths Richard Ian | 10 percent owner | 2,000 0.0057% | $7.75 | $15,500 | -13.17% | ||
| 2025-08-03 | Sale | Griffiths Richard Ian | 10 percent owner | 20,000 0.0399% | $5.45 | $109,000 | -4.71% | |
| 2025-08-03 | Griffiths Richard Ian | 10 percent owner | 20,000 0.0399% | $5.45 | $109,000 | -4.71% | ||
| 2025-08-01 | Griffiths Richard Ian | 10 percent owner | 4,034 0.0091% | $6.14 | $24,769 | -8.10% | ||
| 2025-07-31 | Griffiths Richard Ian | 10 percent owner | 14,342 0.0324% | $6.18 | $88,634 | -7.87% | ||
| 2025-07-30 | Griffiths Richard Ian | 10 percent owner | 8,923 0.0201% | $6.14 | $54,787 | -7.64% | ||
| 2025-07-29 | Griffiths Richard Ian | 10 percent owner | 14,559 0.033% | $6.20 | $90,266 | -8.31% | ||
| 2025-07-22 | Griffiths Richard Ian | 10 percent owner | 2,910 0.0065% | $6.09 | $17,722 | -7.52% | ||
| 2025-07-21 | Griffiths Richard Ian | 10 percent owner | 22,435 0.0496% | $6.04 | $135,507 | -6.16% | ||
| 2025-07-15 | Griffiths Richard Ian | 10 percent owner | 43,293 0.1014% | $6.40 | $277,075 | -10.48% | ||
| 2025-07-11 | Griffiths Richard Ian | 10 percent owner | 28,000 0.0659% | $6.43 | $180,040 | -9.47% | ||
| 2025-07-09 | Griffiths Richard Ian | 10 percent owner | 30,133 0.0662% | $6.00 | $180,798 | -9.80% | ||
| 2025-07-08 | Griffiths Richard Ian | 10 percent owner | 24,387 0.053% | $5.94 | $144,859 | -1.02% | ||
| 2025-07-07 | Griffiths Richard Ian | 10 percent owner | 7,937 0.0164% | $5.65 | $44,844 | +2.27% | ||
| 2025-06-27 | Griffiths Richard Ian | 10 percent owner | 24,000 0.0511% | $5.82 | $139,680 | +0.86% | ||
| 2025-06-26 | Griffiths Richard Ian | 10 percent owner | 86,474 0.1852% | $5.85 | $506,085 | +5.23% | ||
| 2025-06-24 | Griffiths Richard Ian | 10 percent owner | 26,624 0.0596% | $6.12 | $162,939 | -3.97% | ||
| 2025-06-23 | Griffiths Richard Ian | 10 percent owner | 35,005 0.0753% | $5.88 | $205,829 | +0.87% | ||
| 2025-06-22 | Griffiths Richard Ian | 10 percent owner | 20,977 0.0448% | $5.84 | $122,506 | +6.50% |
| Griffiths Richard Ian | 10 percent owner | 11825861 25.0368% | $86.92M | 58 | 2 | +3.82% |
$69,151,774 | 71 | 24.96% | $329.51M | |
$5,911,307 | 70 | -1.38% | $351.73M | |
$54,836,085 | 68 | -0.52% | $368.52M | |
$17,468,215 | 46 | 18.85% | $373.92M | |
$24,436,687 | 43 | -29.99% | $319.49M | |
$16,169,789 | 40 | 7.44% | $319.11M | |
$1,447,973 | 17 | 13.95% | $318.93M | |
$8,069,667 | 13 | -13.57% | $370.14M | |
$112,952,085 | 11 | -19.19% | $349.91M | |
$13,043,783 | 8 | 732.82% | $308.05M | |
$91,549,696 | 8 | -6.55% | $352.78M | |
$603,645 | 8 | 57.40% | $343.99M | |
$1,346,998 | 7 | 25.06% | $315.23M | |
Silence Therapeutics plc (SLN) | $2,342,954 | 7 | 3.82% | $347.17M |
$17,675,244 | 7 | 92.20% | $308.82M | |
$43,326,461 | 6 | 16.01% | $369.77M | |
$208,592 | 4 | 11.22% | $357.92M | |
$15,551,156 | 3 | 98.82% | $367.34M | |
$2,720,023 | 3 | -11.76% | $334.11M |
| Increased Positions | 29 | +42.65% | 3M | +15.62% |
| Decreased Positions | 28 | -41.18% | 5M | -25.48% |
| New Positions | 14 | New | 2M | New |
| Sold Out Positions | 11 | Sold Out | 2M | Sold Out |
| Total Postitions | 69 | +1.47% | 18M | -9.86% |