Richard Ian Griffiths

CIK 1846370 · View on SEC EDGAR ↗

Insider Activist

First SEC filing: Jan. 2, 2025 · Latest: June 25, 2025

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Insider at

Insider transactions

1 buys (P) 18 sells (S) Net: $0 last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Aug. 10, 2026 SLN S 2,792,826 7,488,660 Indirect +59.47% Acquired (price as of 2026-08-21)
Aug. 10, 2026 SLN S 100,000 7,388,660 Indirect +1.37% Acquired (price as of 2026-08-21)
Aug. 10, 2026 SLN S 50,000 7,338,660 Indirect +0.69% Acquired (price as of 2026-08-21)
Aug. 10, 2026 SLN S 3,500 7,335,160 Indirect +0.05% Acquired (price as of 2026-08-21)
Aug. 10, 2026 SLN S 800,000 6,535,160 Indirect +13.95% Acquired (price as of 2026-08-21)
Aug. 10, 2026 SLN S 382,000 6,153,160 Indirect +6.62% Acquired (price as of 2026-08-21)
Aug. 10, 2026 SLN S 470,820 5,682,340 Indirect +9.03% Acquired (price as of 2026-08-21)
Aug. 10, 2026 SLN S 605,174 5,077,166 Indirect +13.53% Acquired (price as of 2026-08-21)
Aug. 10, 2026 SLN S 120,000 4,957,166 Indirect +2.48% Acquired (price as of 2026-08-21)
Aug. 10, 2026 SLN S 60,000 4,897,166 Indirect +1.24% Acquired (price as of 2026-08-21)
Aug. 10, 2026 SLN S 100,000 4,797,166 Indirect +2.13% Acquired (price as of 2026-08-21)
July 6, 2026 SLN S 865,112 10,281,486 Indirect +9.19% Acquired (price as of 2026-08-21)
July 2, 2026 SLN S 50,082 11,146,598 Indirect +0.45% Acquired (price as of 2026-08-21)
July 1, 2026 SLN S 50,000 11,196,680 Indirect +0.45% Acquired (price as of 2026-08-21)
July 1, 2026 SLN S 79,180 11,246,680 Indirect +0.71% Acquired (price as of 2026-08-21)
June 30, 2026 SLN S 169,928 11,325,860 Indirect +1.52% Acquired (price as of 2026-08-21)
June 29, 2026 SLN S 330,072 11,495,788 Indirect +2.96% Acquired (price as of 2026-08-21)
Oct. 27, 2025 SLN P 2,000 11,825,861 Indirect +0.02% Acquired (price as of 2026-08-21)
Oct. 27, 2025 SLN S 2,000 11,819,861 Indirect +0.02% Acquired (price as of 2026-08-21)
Aug. 3, 2025 SLN P 20,000 11,825,861 Indirect +0.17% Acquired (price as of 2026-08-21)
Aug. 3, 2025 SLN S 20,000 11,805,861 Indirect +0.17% Acquired (price as of 2026-08-21)
Aug. 1, 2025 SLN P 4,034 11,825,861 Indirect +0.03% Acquired (price as of 2026-08-21)
July 31, 2025 SLN P 14,342 11,821,827 Indirect +0.12% Acquired (price as of 2026-08-21)
July 30, 2025 SLN P 8,923 11,807,485 Indirect +0.08% Acquired (price as of 2026-08-21)
July 29, 2025 SLN P 14,559 11,798,562 Indirect +0.12% Acquired (price as of 2026-08-21)
July 22, 2025 SLN P 2,910 11,784,003 Indirect +0.02% Acquired (price as of 2026-08-21)
July 21, 2025 SLN P 22,435 11,781,093 Indirect +0.19% Acquired (price as of 2026-08-21)
July 15, 2025 SLN P 43,293 11,758,658 Indirect +0.37% Acquired (price as of 2026-08-21)
July 11, 2025 SLN P 28,000 11,715,365 Direct +0.24% Acquired (price as of 2026-08-21)
July 9, 2025 SLN P 30,133 11,687,365 Direct +0.26% Acquired (price as of 2026-08-21)
July 8, 2025 SLN P 24,387 11,657,232 Direct +0.21% Acquired (price as of 2026-08-21)
July 7, 2025 SLN P 7,937 11,632,845 Direct +0.07% Acquired (price as of 2026-08-21)
June 27, 2025 SLN P 24,000 11,624,908 Direct +0.21% Acquired (price as of 2026-08-21)
June 26, 2025 SLN P 20,735 11,600,908 Direct +0.18% Acquired (price as of 2026-08-21)
June 26, 2025 SLN P 65,739 11,580,173 Direct +0.57% Acquired (price as of 2026-08-21)
June 24, 2025 SLN P 26,624 11,514,434 Direct +0.23% Acquired (price as of 2026-08-21)
June 23, 2025 SLN P 35,005 11,487,810 Direct +0.31% Acquired (price as of 2026-08-21)
June 22, 2025 SLN P 20,977 11,452,805 Direct +0.18% Acquired (price as of 2026-08-21)
June 18, 2025 SLN P 39,049 11,431,828 Direct +0.34% Acquired (price as of 2026-08-21)
June 17, 2025 SLN P 31,399 11,392,779 Direct +0.28% Acquired (price as of 2026-08-21)
June 12, 2025 SLN P 39,305 11,361,380 Direct +0.35% Acquired (price as of 2026-08-21)
May 28, 2025 SLN P 9,169 11,322,075 Direct +0.08% Acquired (price as of 2026-08-21)
May 27, 2025 SLN P 50,000 11,312,906 Direct +0.44% Acquired (price as of 2026-08-21)
May 26, 2025 SLN P 26,669 11,262,906 Direct +0.24% Acquired (price as of 2026-08-21)
May 23, 2025 SLN P 17,187 11,236,237 Direct +0.15% Acquired (price as of 2026-08-21)
May 22, 2025 SLN P 19,174 11,219,050 Direct +0.17% Acquired (price as of 2026-08-21)
May 20, 2025 SLN P 16,000 11,199,876 Direct +0.14% Acquired (price as of 2026-08-21)
May 19, 2025 SLN P 26,000 11,183,876 Direct +0.23% Acquired (price as of 2026-08-21)
May 18, 2025 SLN P 37,023 11,157,876 Direct +0.33% Acquired (price as of 2026-08-21)
May 14, 2025 SLN P 55,766 11,120,853 Direct +0.50% Acquired (price as of 2026-08-21)
May 13, 2025 SLN P 94,234 11,065,087 Direct +0.86% Acquired (price as of 2026-08-21)
May 7, 2025 SLN P 50,000 10,970,853 Direct +0.46% Acquired (price as of 2026-08-21)
May 6, 2025 SLN P 100,000 10,920,850 Direct +0.92% Acquired (price as of 2026-08-21)
May 5, 2025 SLN P 100,000 10,820,853 Direct +0.93% Acquired (price as of 2026-08-21)
May 1, 2025 SLN P 75,266 10,720,853 Direct +0.71% Acquired (price as of 2026-08-21)
April 30, 2025 SLN P 34,309 10,645,587 Direct +0.32% Acquired (price as of 2026-08-21)
April 29, 2025 SLN P 54,768 10,611,278 Direct +0.52% Acquired (price as of 2026-08-21)
April 28, 2025 SLN P 95,211 10,556,510 Direct +0.91% Acquired (price as of 2026-08-21)
April 25, 2025 SLN P 59,568 10,461,299 Direct +0.57% Acquired (price as of 2026-08-21)
April 24, 2025 SLN P 90,432 10,401,731 Direct +0.88% Acquired (price as of 2026-08-21)
April 23, 2025 SLN P 50,000 10,311,299 Direct +0.49% Acquired (price as of 2026-08-21)
April 22, 2025 SLN P 50,000 10,261,299 Direct +0.49% Acquired (price as of 2026-08-21)
April 21, 2025 SLN P 100,000 10,211,299 Direct +0.99% Acquired (price as of 2026-08-21)
April 17, 2025 SLN P 50,000 10,111,299 Direct +0.50% Acquired (price as of 2026-08-21)
April 15, 2025 SLN P 27,918 10,061,299 Direct +0.28% Acquired (price as of 2026-08-21)
April 14, 2025 SLN P 50,000 10,033,381 Direct +0.50% Acquired (price as of 2026-08-21)
April 14, 2025 SLN P 40,409 9,983,381 Direct +0.41% Acquired (price as of 2026-08-21)
April 11, 2025 SLN P 56,480 9,942,972 Direct +0.57% Acquired (price as of 2026-08-21)
April 10, 2025 SLN P 25,193 9,886,492 Direct +0.26% Acquired (price as of 2026-08-21)
March 31, 2025 SLN P 100,000 9,861,299 Indirect +1.02% Acquired (price as of 2026-08-21)
March 31, 2025 SLN P 100,000 9,761,299 Indirect +1.04% Acquired (price as of 2026-08-21)
March 28, 2025 SLN P 50,000 9,661,299 Indirect +0.52% Acquired (price as of 2026-08-21)
March 27, 2025 SLN P 50,000 9,611,299 Indirect +0.52% Acquired (price as of 2026-08-21)
March 5, 2025 SLN P 22,632 9,561,299 Indirect +0.24% Acquired (price as of 2026-08-21)
Feb. 18, 2025 SLN P 60,000 9,538,667 Direct +0.63% Acquired (price as of 2026-08-21)
Feb. 13, 2025 SLN P 60,000 9,478,667 Direct +0.64% Acquired (price as of 2026-08-21)
Feb. 13, 2025 SLN P 92,774 9,418,667 Indirect +0.99% Acquired (price as of 2026-08-21)
Jan. 23, 2025 SLN P 12,226 9,325,893 Indirect +0.13% Acquired (price as of 2026-08-21)
Jan. 21, 2025 SLN P 20,000 9,313,667 Indirect +0.22% Acquired (price as of 2026-08-21)
Jan. 21, 2025 SLN P 25,000 9,293,667 Indirect +0.27% Acquired (price as of 2026-08-21)
Jan. 17, 2025 SLN P 150,000 9,268,667 Indirect +1.64% Acquired (price as of 2026-08-21)
Jan. 8, 2025 SLN P 30,000 9,118,667 Direct +0.33% Acquired (price as of 2026-08-21)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date Ticker Security Underlying Exercise price Expiration Shares A/D
Aug. 10, 2026 SLN American Depositary Shares Ordinary Shares (8,378,478) $16.00 2,792,826 Acquired
Aug. 10, 2026 SLN American Depositary Shares Ordinary Shares (300,000) $15.58 100,000 Acquired
Aug. 10, 2026 SLN American Depositary Shares Ordinary Shares (150,000) $16.09 50,000 Acquired
Aug. 10, 2026 SLN American Depositary Shares Ordinary Shares (10,500) $16.35 3,500 Acquired
Aug. 10, 2026 SLN American Depositary Shares Ordinary Shares (2,400,000) $16.00 800,000 Acquired
Aug. 10, 2026 SLN American Depositary Shares Ordinary Shares (1,146,000) $16.00 382,000 Acquired
Aug. 10, 2026 SLN American Depositary Shares Ordinary Shares (1,412,460) $16.09 470,820 Acquired
Aug. 10, 2026 SLN American Depositary Shares Ordinary Shares (1,815,522) $16.00 605,174 Acquired
Aug. 10, 2026 SLN American Depositary Shares Ordinary Shares (360,000) $16.00 120,000 Acquired
Aug. 10, 2026 SLN American Depositary Shares Ordinary Shares (180,000) $16.35 60,000 Acquired
Aug. 10, 2026 SLN American Depositary Shares Ordinary Shares (300,000) $16.00 100,000 Acquired
July 6, 2026 SLN American Depositary Shares Ordinary Shares (2,595,336) $10.53 865,112 Acquired
July 2, 2026 SLN American Depositary Shares Ordinary Shares (150,246) $10.47 50,082 Acquired
July 1, 2026 SLN American Depositary Shares Ordinary Shares (150,000) $10.62 50,000 Acquired
July 1, 2026 SLN American Depositary Shares Ordinary Shares (237,540) $10.62 79,180 Acquired
June 30, 2026 SLN American Depositary Shares Ordinary Shares (509,784) $10.76 169,928 Acquired
June 29, 2026 SLN American Depositary Shares Ordinary Shares (990,216) $10.69 330,072 Acquired
Oct. 27, 2025 SLN American Depositary Shares Ordinary Shares (6,000) $7.75 2,000 Acquired
Oct. 27, 2025 SLN American Depositary Shares Ordinary Shares (6,000) $7.75 2,000 Acquired
Aug. 3, 2025 SLN American Depositary Shares Ordinary Shares (60,000) $5.45 20,000 Acquired
Aug. 3, 2025 SLN American Depositary Shares Ordinary Shares (60,000) $5.45 20,000 Acquired
Aug. 1, 2025 SLN American Depositary Shares Ordinary Shares (12,102) $6.14 4,034 Acquired
July 31, 2025 SLN American Depositary Shares Ordinary Shares (43,026) $6.18 14,342 Acquired
July 30, 2025 SLN American Depositary Shares Ordinary Shares (26,769) $6.14 8,923 Acquired
July 29, 2025 SLN American Depositary Shares Ordinary Shares (43,667) $6.20 14,559 Acquired
July 22, 2025 SLN American Depositary Shares Ordinary Shares (8,730) $6.09 2,910 Acquired
July 21, 2025 SLN American Depositary Shares Ordinary Shares (67,305) $6.04 22,435 Acquired
July 15, 2025 SLN American Depositary Shares Ordinary Shares (129,879) $6.40 43,293 Acquired
July 11, 2025 SLN American Depositary Shares Ordinary Shares (84,000) $6.43 28,000 Acquired
July 9, 2025 SLN American Depositary Shares Ordinary Shares (90,399) $6.00 30,133 Acquired
July 8, 2025 SLN American Depositary Shares Ordinary Shares (73,161) $5.94 24,387 Acquired
July 7, 2025 SLN American Depositary Shares Ordinary Shares (23,811) $5.65 7,937 Acquired
June 27, 2025 SLN American Depositary Shares Ordinary Shares (72,000) $5.82 24,000 Acquired
June 26, 2025 SLN American Depositary Shares Ordinary Shares (62,205) $5.67 20,735 Acquired
June 26, 2025 SLN American Depositary Shares Ordinary Shares (197,217) $5.91 65,739 Acquired
June 24, 2025 SLN American Depositary Shares Ordinary Shares (79,872) $6.12 26,624 Acquired
June 23, 2025 SLN American Depositary Shares Ordinary Shares (105,015) $5.88 35,005 Acquired
June 22, 2025 SLN American Depositary Shares Ordinary Shares (62,931) $5.84 20,977 Acquired
June 18, 2025 SLN American Depositary Shares Ordinary Shares (117,147) $5.69 39,049 Acquired
June 17, 2025 SLN American Depositary Shares Ordinary Shares (94,197) $5.29 31,399 Acquired
June 12, 2025 SLN American Depositary Shares Ordinary Shares (117,915) $5.15 39,305 Acquired
May 28, 2025 SLN American Depositary Shares Ordinary Shares (27,507) $5.11 9,169 Acquired
May 27, 2025 SLN American Depositary Shares Ordinary Shares (150,000) $5.13 50,000 Acquired
May 26, 2025 SLN American Depositary Shares Ordinary Shares (80,007) $4.91 26,669 Acquired
May 23, 2025 SLN American Depositary Shares Ordinary Shares (51,561) $4.92 17,187 Acquired
May 22, 2025 SLN American Depositary Shares Ordinary Shares (57,522) $5.04 19,174 Acquired
May 20, 2025 SLN American Depositary Shares Ordinary Shares (48,000) $4.07 16,000 Acquired
May 19, 2025 SLN American Depositary Shares Ordinary Shares (78,000) $4.07 26,000 Acquired
May 18, 2025 SLN American Depositary Shares Ordinary Shares (111,069) $4.01 37,023 Acquired
May 14, 2025 SLN American Depositary Shares Ordinary Shares (167,298) $4.07 55,766 Acquired
May 13, 2025 SLN American Depositary Shares Ordinary Shares (282,702) $4.01 94,234 Acquired
May 7, 2025 SLN American Depositary Shares Ordinary Shares (150,000) $3.81 50,000 Acquired
May 6, 2025 SLN American Depositary Shares Ordinary Shares (300,000) $3.96 100,000 Acquired
May 5, 2025 SLN American Depositary Shares Ordinary Shares (300,000) $3.94 100,000 Acquired
May 1, 2025 SLN American Depositary Shares Ordinary Shares (225,798) $3.97 75,266 Acquired
April 30, 2025 SLN American Depositary Shares Ordinary Shares (102,927) $3.66 34,309 Acquired
April 29, 2025 SLN American Depositary Shares Ordinary Shares (164,304) $3.49 54,768 Acquired
April 28, 2025 SLN American Depositary Shares Ordinary Shares (285,633) $3.43 95,211 Acquired
April 25, 2025 SLN American Depositary Shares Ordinary Shares (178,704) $3.54 59,568 Acquired
April 24, 2025 SLN American Depositary Shares Ordinary Shares (271,296) $3.42 90,432 Acquired
April 23, 2025 SLN American Depositary Shares Ordinary Shares (150,000) $3.18 50,000 Acquired
April 22, 2025 SLN American Depositary Shares Ordinary Shares (150,000) $3.10 50,000 Acquired
April 21, 2025 SLN American Depositary Shares Ordinary Shares (300,000) $3.12 100,000 Acquired
April 17, 2025 SLN American Depositary Shares Ordinary Shares (150,000) $3.14 50,000 Acquired
April 15, 2025 SLN American Depositary Shares Ordinary Shares (83,754) $2.78 27,918 Acquired
April 14, 2025 SLN American Depositary Shares Ordinary Shares (150,000) $2.65 50,000 Acquired
April 14, 2025 SLN American Depositary Shares Ordinary Shares (121,227) $2.71 40,409 Acquired
April 11, 2025 SLN American Depositary Shares Ordinary Shares (169,440) $2.33 56,480 Acquired
April 10, 2025 SLN American Depositary Shares Ordinary Shares (75,579) $2.14 25,193 Acquired
March 31, 2025 SLN American Depositary Shares Ordinary Shares (300,000) $2.83 100,000 Acquired
March 31, 2025 SLN American Depositary Shares Ordinary Shares (300,000) $3.46 100,000 Acquired
March 28, 2025 SLN American Depositary Shares Ordinary Shares (150,000) $3.58 50,000 Acquired
March 27, 2025 SLN American Depositary Shares Ordinary Shares (150,000) $3.32 50,000 Acquired
March 5, 2025 SLN American Depositary Shares Ordinary Shares (67,896) $4.50 22,632 Acquired
Feb. 18, 2025 SLN American Depositary Shares Ordinary Shares (180,000) $4.85 60,000 Acquired
Feb. 13, 2025 SLN American Depositary Shares Ordinary Shares (180,000) $4.17 60,000 Acquired
Feb. 13, 2025 SLN American Depositary Shares Ordinary Shares (278,322) $4.29 92,774 Acquired
Jan. 23, 2025 SLN American Depositary Shares Ordinary Shares (36,678) $5.35 12,226 Acquired
Jan. 21, 2025 SLN American Depositary Shares Ordinary Shares (60,000) $5.48 20,000 Acquired
Jan. 21, 2025 SLN American Depositary Shares Ordinary Shares (75,000) $5.20 25,000 Acquired
Jan. 17, 2025 SLN American Depositary Shares Ordinary Shares (450,000) $5.35 150,000 Acquired
Jan. 8, 2025 SLN American Depositary Shares Ordinary Shares (90,000) $6.48 30,000 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 7 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date Ticker Security Shares Ownership
Jan. 2, 2025 SLN American Depositary Shares→ Ordinary Shares (19,221,525) 19,221,525 Indirect
Jan. 2, 2025 SLN American Depositary Shares→ Ordinary Shares (1,815,522) 1,815,522 Indirect
Jan. 2, 2025 SLN American Depositary Shares→ Ordinary Shares (1,500,000) 1,500,000 Indirect
Jan. 2, 2025 SLN American Depositary Shares→ Ordinary Shares (300,000) 300,000 Indirect
Jan. 2, 2025 SLN American Depositary Shares→ Ordinary Shares (360,000) 360,000 Indirect
Jan. 2, 2025 SLN American Depositary Shares→ Ordinary Shares (190,500) 190,500 Indirect
Jan. 2, 2025 SLN American Depositary Shares→ Ordinary Shares (3,878,454) 3,878,454 Direct