Brian F Maxted

Insider

First SEC filing: Jan. 18, 2019 · Latest: March 18, 2026

On this page

Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.
Compensation Executive pay disclosed in company proxy statements.

Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 27 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

27 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
May 18, 2026	GPRK	A	2,812	—	—	42,459 Direct	+7.09%	Acquired	(price as of 2026-08-20)
Jan. 2, 2018	KOS	F	14,126	$6.85	$96,763	2,056,114 Direct	-0.68%	Disposed	-57.6% (price as of 2026-08-20)
Jan. 2, 2018	KOS	F	84,757	$6.85	$580,585	2,070,240 Direct	-3.93%	Disposed	-57.6% (price as of 2026-08-20)
Jan. 2, 2018	KOS	A	179,000	—	—	2,154,997 Direct	+9.06%	Acquired	(price as of 2026-08-20)
Jan. 2, 2018	KOS	F	190,439	$6.85	$1,304,507	1,975,997 Direct	-8.79%	Disposed	-57.6% (price as of 2026-08-20)
Jan. 2, 2018	KOS	A	400,294	—	—	2,166,436 Direct	+22.66%	Acquired	(price as of 2026-08-20)
Jan. 2, 2018	KOS	F	14,126	$6.85	$96,763	1,766,142 Direct	-0.79%	Disposed	-57.6% (price as of 2026-08-20)
Jan. 2, 2018	KOS	F	14,127	$6.85	$96,770	1,780,268 Direct	-0.79%	Disposed	-57.6% (price as of 2026-08-20)
June 1, 2017	KOS	F	11,275	$6.12	$69,003	1,794,395 Direct	-0.62%	Disposed	-52.5% (price as of 2026-08-20)
Jan. 31, 2017	KOS	A	89,500	—	—	1,805,670 Direct	+5.22%	Acquired	(price as of 2026-08-20)
Jan. 3, 2017	KOS	F	14,127	$7.01	$99,030	1,716,170 Direct	-0.82%	Disposed	-58.6% (price as of 2026-08-20)
Jan. 3, 2017	KOS	F	14,995	$7.01	$105,115	1,730,297 Direct	-0.86%	Disposed	-58.6% (price as of 2026-08-20)
June 1, 2016	KOS	F	9,988	$5.60	$55,933	1,745,292 Direct	-0.57%	Disposed	-48.1% (price as of 2026-08-20)
Jan. 22, 2016	KOS	A	89,500	—	—	1,769,101 Direct	+5.33%	Acquired	(price as of 2026-08-20)
Jan. 4, 2016	KOS	F	14,972	$5.20	$77,854	1,679,601 Direct	-0.88%	Disposed	-44.1% (price as of 2026-08-20)
June 1, 2015	KOS	F	11,036	$8.87	$97,889	1,694,573 Direct	-0.65%	Disposed	-67.2% (price as of 2026-08-20)
Jan. 23, 2015	KOS	A	89,500	—	—	2,441,736 Direct	+3.80%	Acquired	(price as of 2026-08-20)
June 30, 2014	KOS	S 10b5-1	1,600	$11.25	$18,000	474,625 Indirect	-0.34%	Disposed	-74.2% (price as of 2026-08-20)
June 27, 2014	KOS	S 10b5-1	6,600	$11.25	$74,250	476,225 Indirect	-1.37%	Disposed	-74.2% (price as of 2026-08-20)
June 24, 2014	KOS	A	95,238	—	—	2,352,236 Direct	+4.22%	Acquired	(price as of 2026-08-20)
June 23, 2014	KOS	S 10b5-1	7,900	$11.25	$88,875	482,825 Indirect	-1.61%	Disposed	-74.2% (price as of 2026-08-20)
June 20, 2014	KOS	S 10b5-1	9,275	$11.25	$104,344	490,725 Indirect	-1.85%	Disposed	-74.2% (price as of 2026-08-20)
June 17, 2014	KOS	S 10b5-1	20,637	$11.00	$227,007	500,000 Indirect	-3.96%	Disposed	-73.6% (price as of 2026-08-20)
May 27, 2014	KOS	S 10b5-1	82,162	$10.35	$850,377	520,637 Indirect	-13.63%	Disposed	-71.9% (price as of 2026-08-20)
May 16, 2014	KOS	F	257,518	$10.48	$2,698,789	2,256,998 Direct	-10.24%	Disposed	-72.3% (price as of 2026-08-20)
May 2, 2014	KOS	S 10b5-1	31,452	$11.00	$345,972	520,637 Indirect	-5.70%	Disposed	-73.6% (price as of 2026-08-20)
April 29, 2014	KOS	S 10b5-1	39,366	$11.01	$433,420	552,089 Indirect	-6.66%	Disposed	-73.6% (price as of 2026-08-20)
April 28, 2014	KOS	S 10b5-1	2,192	$11.01	$24,134	591,455 Indirect	-0.37%	Disposed	-73.6% (price as of 2026-08-20)
April 25, 2014	KOS	S 10b5-1	4,053	$11.00	$44,583	593,647 Indirect	-0.68%	Disposed	-73.6% (price as of 2026-08-20)
April 24, 2014	KOS	S 10b5-1	57,360	$11.00	$630,960	597,700 Indirect	-8.76%	Disposed	-73.6% (price as of 2026-08-20)
April 23, 2014	KOS	S 10b5-1	64,834	$11.00	$713,174	655,060 Indirect	-9.01%	Disposed	-73.6% (price as of 2026-08-20)
April 22, 2014	KOS	S 10b5-1	406	$11.00	$4,466	719,894 Indirect	-0.06%	Disposed	-73.6% (price as of 2026-08-20)
April 21, 2014	KOS	S 10b5-1	51,138	$11.00	$562,518	720,300 Indirect	-6.63%	Disposed	-73.6% (price as of 2026-08-20)
April 17, 2014	KOS	S 10b5-1	82,162	$11.00	$903,782	771,438 Indirect	-9.63%	Disposed	-73.6% (price as of 2026-08-20)
April 16, 2014	KOS	S 10b5-1	36,787	$10.93	$402,082	853,600 Indirect	-4.13%	Disposed	-73.4% (price as of 2026-08-20)
April 15, 2014	KOS	S 10b5-1	40,475	$10.80	$437,130	890,387 Indirect	-4.35%	Disposed	-73.1% (price as of 2026-08-20)
April 8, 2014	KOS	S 10b5-1	500	$10.50	$5,250	930,862 Indirect	-0.05%	Disposed	-72.3% (price as of 2026-08-20)
April 7, 2014	KOS	S 10b5-1	74,089	$10.55	$781,639	931,362 Indirect	-7.37%	Disposed	-72.5% (price as of 2026-08-20)
April 4, 2014	KOS	S 10b5-1	77,500	$10.88	$843,200	1,005,451 Indirect	-7.16%	Disposed	-73.3% (price as of 2026-08-20)
April 3, 2014	KOS	S 10b5-1	86,020	$10.95	$941,919	1,082,951 Indirect	-7.36%	Disposed	-73.5% (price as of 2026-08-20)
April 2, 2014	KOS	S 10b5-1	121,201	$10.95	$1,327,151	1,168,971 Indirect	-9.39%	Disposed	-73.5% (price as of 2026-08-20)
April 1, 2014	KOS	S 10b5-1	402,845	$10.98	$4,423,238	1,290,172 Indirect	-23.79%	Disposed	-73.5% (price as of 2026-08-20)
March 31, 2014	KOS	S 10b5-1	178,956	$10.98	$1,964,937	1,693,017 Indirect	-9.56%	Disposed	-73.5% (price as of 2026-08-20)
March 28, 2014	KOS	S 10b5-1	128,027	$11.10	$1,421,100	1,871,973 Indirect	-6.40%	Disposed	-73.8% (price as of 2026-08-20)
May 16, 2013	KOS	F	258,774	$11.52	$2,981,076	5,676,092 Direct	-4.36%	Disposed	-74.8% (price as of 2026-08-20)
March 15, 2013	KOS	S	161,270	$11.00	$1,773,970	5,934,866 Direct	-2.65%	Disposed	-73.6% (price as of 2026-08-20)
Feb. 21, 2013	KOS	S	1,061,461	$11.00	$11,676,071	6,096,136 Direct	-14.83%	Disposed	-73.6% (price as of 2026-08-20)
May 16, 2012	KOS	J	226,348	$10.52	$2,381,181	7,157,597 Direct	-3.07%	Disposed	-72.4% (price as of 2026-08-20)
June 15, 2011	KOS	M	647,059	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 15, 2011	KOS	M	647,059	—	—	7,383,945 Direct	+9.60%	Acquired	(price as of 2026-08-20)
May 18, 2011	KOS	A	647,059	—	—	647,059 Direct	—	Acquired	(price as of 2026-08-20)
May 18, 2011	KOS	A	2,588,235	—	—	6,736,886 Direct	+62.39%	Acquired	(price as of 2026-08-20)
May 16, 2011	KOS	J	6,729,864	—	—	6,729,864 Indirect	—	Acquired	(price as of 2026-08-20)
May 16, 2011	KOS	P	10,000	$18.00	$180,000	4,148,651 Direct	+0.24%	Acquired	-83.9% (price as of 2026-08-20)
May 16, 2011	KOS	J	4,138,651	—	—	4,138,651 Direct	—	Acquired	(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 15, 2011	KOS	Common Shares (Right to Receive)	Common Shares (647,059)	—	June 15, 2011	647,059	Disposed
May 18, 2011	KOS	Common Shares (Right to Receive)	Common Shares (647,059)	—	—	647,059	Acquired

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

Initial ownership (Form 3) 2 holdings

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

Date	Ticker	Security	Shares	Ownership
March 18, 2026	GPRK	Common shares, par value US$0.001 per share	39,647	Direct
May 11, 2011	KOS	Common Stock [F1]	0	Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

KOS

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2018	$696,480	—	—	—	$696,480	—	$11,453	$3,310,458
2017	$676,194	—	—	—	$845,243	—	$9,771	$3,380,863
2016	$676,194	—	$765,225	—	$1,352,388	—	$17,818	$2,811,625

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.