Mark S Cohen — SEC Insider Profile, Roles & Companies

Insider at

04

AKTX buying Sept. 18, 2015

Insider transactions

05

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
June 29, 2016	AKTX	A	1,300,000	·	·	1,300,000 Direct	·	Acquired	(price as of 2026-10-05)
Nov. 25, 2015	AKTX	A	1,028,722	·	·	1,028,722 Direct	·	Acquired	(price as of 2026-10-05)
Sept. 21, 2015	AKTX	A	186,278	·	·	186,278 Direct	·	Acquired	(price as of 2026-10-05)
Sept. 21, 2015	AKTX	A	85,000	·	·	85,000 Direct	·	Acquired	(price as of 2026-10-05)
Sept. 18, 2015	AKTX	P	1,055,600	$0.19	$200,564	1,055,600 Direct	·	Acquired	-94.1% (price as of 2026-10-05)
Jan. 8, 2015	AKTX	X	152,000	·	·	0 Indirect	-100.00%	Disposed	(price as of 2026-10-05)
Jan. 8, 2015	AKTX	X	50,700	·	·	0 Indirect	-100.00%	Disposed	(price as of 2026-10-05)
Jan. 8, 2015	AKTX	X	152,000	$0.02	$3,040	152,000 Direct	·	Acquired	-94.4% (price as of 2026-10-05)
Jan. 8, 2015	AKTX	X	50,700	$0.02	$1,014	50,700 Direct	·	Acquired	-94.4% (price as of 2026-10-05)

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.

06

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

07

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