Mark S Cohen

CIK 1622779 · View on SEC EDGAR ↗

Insider

First SEC filing: Jan. 2, 2015 · Latest: Jan. 2, 2015

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Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 8 non-open-market transactions below 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

8 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Sept. 18, 2015 AKTX P 1,055,600 $0.19 $200,564 1,055,600 Direct — Acquired -94.8% (price as of 2026-08-20)

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
June 29, 2016 AKTX Options to Purchase Ordinary Shares Ordinary Shares (1,300,000) $0.15 June 29, 2026 1,300,000 Acquired
Nov. 25, 2015 AKTX Options to Purchase Ordinary Shares [F1] Ordinary Shares (1,028,722) $0.19 Nov. 25, 2025 1,028,722 Acquired
Sept. 21, 2015 AKTX Options to Purchase Ordinary Shares [F2] Ordinary Shares (186,278) $0.32 Sept. 21, 2025 186,278 Acquired
Sept. 21, 2015 AKTX Options to Purchase Ordinary Shares [F2] Ordinary Shares (85,000) $0.32 Sept. 21, 2025 85,000 Acquired
Jan. 8, 2015 AKTX Options to Purchase Ordinary Shares Ordinary Shares (152,000) — March 12, 2017 152,000 Disposed
Jan. 8, 2015 AKTX Options to Purchase Ordinary Shares Ordinary Shares (50,700) $0.02 Jan. 18, 2015 50,700 Disposed

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

Initial ownership (Form 3) 23 holdings

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

Date Ticker Security Shares Ownership
Jan. 2, 2015 AKTX Ordinary Shares 1,389,557 Direct
Jan. 2, 2015 AKTX Options to Purchase Ordinary Shares→ Ordinary Shares (136,500) 136,500 Direct
Jan. 2, 2015 AKTX Options to Purchase Ordinary Shares→ Ordinary Shares (75,000) 75,000 Direct
Jan. 2, 2015 AKTX Options to Purchase Ordinary Shares→ Ordinary Shares (60,000) 60,000 Direct
Jan. 2, 2015 AKTX Options to Purchase Ordinary Shares→ Ordinary Shares (100,000) 100,000 Direct
Jan. 2, 2015 AKTX Options to Purchase Ordinary Shares→ Ordinary Shares (65,000) 65,000 Direct
Jan. 2, 2015 AKTX Options to Purchase Ordinary Shares→ Ordinary Shares (65,000) 65,000 Direct
Jan. 2, 2015 AKTX Options to Purchase Ordinary Shares→ Ordinary Shares (50,700) 50,700 Indirect
Jan. 2, 2015 AKTX Options to Purchase Ordinary Shares→ Ordinary Shares (152,000) 152,000 Indirect
Jan. 2, 2015 AKTX Warrants to Purchase Ordinary Shares→ Ordinary Shares (11,500) 11,500 Direct
Jan. 2, 2015 AKTX Warrants to Purchase Ordinary Shares→ Ordinary Shares (12,500) 12,500 Direct
Jan. 2, 2015 AKTX Warrants to Purchase Ordinary Shares→ Ordinary Shares (12,500) 12,500 Direct
Jan. 2, 2015 AKTX Warrants to Purchase Ordinary Shares→ Ordinary Shares (12,500) 12,500 Direct
Jan. 2, 2015 AKTX Warrants to Purchase Ordinary Shares→ Ordinary Shares (10,000) 10,000 Direct
Jan. 2, 2015 AKTX Warrants to Purchase Ordinary Shares→ Ordinary Shares (8,750) 8,750 Direct
Jan. 2, 2015 AKTX Warrants to Purchase Ordinary Shares→ Ordinary Shares (8,750) 8,750 Direct
Jan. 2, 2015 AKTX Warrants to Purchase Ordinary Shares→ Ordinary Shares (16,500) 16,500 Direct
Jan. 2, 2015 AKTX Warrants to Purchase Ordinary Shares→ Ordinary Shares (12,500) 12,500 Direct
Jan. 2, 2015 AKTX Warrants to Purchase Ordinary Shares→ Ordinary Shares (10,000) 10,000 Direct
Jan. 2, 2015 AKTX Warrants to Purchase Ordinary Shares→ Ordinary Shares (8,500) 8,500 Direct
Jan. 2, 2015 AKTX Warrants to Purchase Ordinary Shares→ Ordinary Shares (10,000) 10,000 Direct
Jan. 2, 2015 AKTX Warrants to Purchase Ordinary Shares→ Ordinary Shares (17,075) 17,075 Direct
Jan. 2, 2015 AKTX Warrants to Purchase Ordinary Shares→ Ordinary Shares (5,500) 5,500 Direct