Ronald A Duncan

Insider

First SEC filing: June 4, 2026 · Latest: June 4, 2026

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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.

Insider at

GLIBK buying June 3, 2026

Insider transactions

4 buys (P) 0 sells (S) Net: $1,420,525 + 31 non-open-market transactions below Avg return of open purchases vs now: 21.6% 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

31 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 3, 2026	GLIBK	P	35,000	$21.06	$737,100	42,516 Indirect	+465.67%	Acquired	21.6% (price as of 2026-08-20)
June 3, 2026	GLIBK	P	25,000	$21.01	$525,250	26,162 Indirect	+2151.46%	Acquired	21.9% (price as of 2026-08-20)
June 3, 2026	GLIBK	P	5,000	$21.11	$105,550	7,022 Indirect	+247.28%	Acquired	21.3% (price as of 2026-08-20)
June 3, 2026	GLIBK	P	2,500	$21.05	$52,625	130,164 Direct	+1.96%	Acquired	21.7% (price as of 2026-08-20)
Feb. 20, 2026	GLIBK	M	1,158	—	—	134,813 Direct	+0.87%	Acquired	(price as of 2026-08-20)
Feb. 20, 2026	GLIBK	F	7,706	$39.70	$305,928	127,107 Direct	-5.72%	Disposed	-35.5% (price as of 2026-08-20)
Feb. 20, 2026	GLIBK	M	1,158	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 10, 2026	GLIBK	A	18,423	—	—	133,655 Direct	+15.99%	Acquired	(price as of 2026-08-20)
Jan. 5, 2026	GLIBK	M	7,035	—	—	117,212 Direct	+6.39%	Acquired	(price as of 2026-08-20)
Jan. 5, 2026	GLIBK	F	1,980	$36.12	$71,518	115,232 Direct	-1.69%	Disposed	-29.1% (price as of 2026-08-20)
Jan. 5, 2026	GLIBK	M	7,035	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 19, 2025	GLIBK	F	174	$36.39	$6,332	110,177 Direct	-0.16%	Disposed	-29.6% (price as of 2026-08-20)
Dec. 19, 2025	GLIBK	M	442	—	—	110,351 Direct	+0.40%	Acquired	(price as of 2026-08-20)
Dec. 19, 2025	GLIBK	M	442	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 18, 2025	GLIBK	A	51,205	—	—	51,205 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 18, 2025	GLIBK	A	1,158	—	—	1,158 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 18, 2025	GLIBK	A	442	—	—	442 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 9, 2025	GLIBK	M	30,485	$27.20	$829,192	109,909 Direct	+38.38%	Acquired	-5.8% (price as of 2026-08-20)
Dec. 9, 2025	GLIBK	M	5,708	$27.20	$155,258	20,578 Indirect	+38.39%	Acquired	-5.8% (price as of 2026-08-20)
Dec. 9, 2025	GLIBK	M	561	$27.20	$15,259	2,022 Indirect	+38.40%	Acquired	-5.8% (price as of 2026-08-20)
Dec. 9, 2025	GLIBK	M	323	$27.20	$8,786	1,162 Indirect	+38.50%	Acquired	-5.8% (price as of 2026-08-20)
Dec. 9, 2025	GLIBK	M	2,085	$27.20	$56,712	7,516 Indirect	+38.39%	Acquired	-5.8% (price as of 2026-08-20)
Dec. 9, 2025	GLIBK	M	30,485	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 9, 2025	GLIBK	M	5,708	—	—	0 Indirect	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 9, 2025	GLIBK	M	561	—	—	0 Indirect	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 9, 2025	GLIBK	M	323	—	—	0 Indirect	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 9, 2025	GLIBK	M	2,085	—	—	0 Indirect	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 21, 2025	GLIBK	A	814,441	—	—	814,441 Direct	—	Acquired	(price as of 2026-08-20)
July 17, 2025	GLIBK	A	7,035	—	—	7,035 Direct	—	Acquired	(price as of 2026-08-20)
July 14, 2025	GLIBK	J	79,424	—	—	79,424 Direct	—	Acquired	(price as of 2026-08-20)
July 14, 2025	GLIBK	J	557	—	—	557 Indirect	—	Acquired	(price as of 2026-08-20)
July 14, 2025	GLIBK	J	14,870	—	—	14,870 Indirect	—	Acquired	(price as of 2026-08-20)
July 14, 2025	GLIBK	J	1,461	—	—	1,461 Indirect	—	Acquired	(price as of 2026-08-20)
July 14, 2025	GLIBK	J	839	—	—	839 Indirect	—	Acquired	(price as of 2026-08-20)
July 14, 2025	GLIBK	J	5,431	—	—	5,431 Indirect	—	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
Feb. 20, 2026	GLIBK	Restricted Stock Units - GLIBK	Series C GCI Group Common Stock (1,158)	—	Feb. 20, 2026	1,158	Disposed
Jan. 5, 2026	GLIBK	Restricted Stock Units - GLIBK	Series C GCI Group Common Stock (7,035)	—	Jan. 5, 2026	7,035	Disposed
Dec. 19, 2025	GLIBK	Restricted Stock Units - GLIBK	Series C GCI Group Common Stock (442)	—	Dec. 19, 2025	442	Disposed
Dec. 18, 2025	GLIBK	Restricted Stock Units - GLIBK	Series C GCI Group Common Stock (51,205)	—	—	51,205	Acquired
Dec. 18, 2025	GLIBK	Restricted Stock Units - GLIBK	Series C GCI Group Common Stock (1,158)	—	March 15, 2026	1,158	Acquired
Dec. 18, 2025	GLIBK	Restricted Stock Units - GLIBK	Series C GCI Group Common Stock (442)	—	Dec. 19, 2025	442	Acquired
Dec. 9, 2025	GLIBK	Subscription Right (Right to Buy) - GLIBK [F6]	Series C GCI Group Common Stock (30,485)	$27.20	—	30,485	Disposed
Dec. 9, 2025	GLIBK	Subscription Right (Right to Buy) - GLIBK [F6]	Series C GCI Group Common Stock (5,708)	$27.20	—	5,708	Disposed
Dec. 9, 2025	GLIBK	Subscription Right (Right to Buy) - GLIBK [F6]	Series C GCI Group Common Stock (561)	$27.20	—	561	Disposed
Dec. 9, 2025	GLIBK	Subscription Right (Right to Buy) - GLIBK [F6]	Series C GCI Group Common Stock (323)	$27.20	—	323	Disposed
Dec. 9, 2025	GLIBK	Subscription Right (Right to Buy) - GLIBK [F6]	Series C GCI Group Common Stock (2,085)	$27.20	—	2,085	Disposed
Aug. 21, 2025	GLIBK	Stock Option - GLIBK (Right to Buy)	Series C GCI Group Common Stock (814,441)	$37.85	Aug. 21, 2030	814,441	Acquired
July 17, 2025	GLIBK	Restricted Stock Units - GLIBK	Series C GCI Group Common Stock (7,035)	—	Jan. 5, 2026	7,035	Acquired

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