GCI Liberty (Series C) (GLIBK) — insider trading
Communication Services · NASDAQ
GCI Liberty (Series C) (GLIBK) has 41 reported SEC Form 4 insider transactions in our data, including 5 open-market purchases among the most recent 41 (latest 2026-06-03).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-06-03 | DUNCAN RONALD A | Director, Officer (President and CEO) | Open-market purchase | 35,000 | $21.06 | $737.0K | Form 4 |
| 2026-06-03 | DUNCAN RONALD A | Director, Officer (President and CEO) | Open-market purchase | 25,000 | $21.01 | $525.4K | Form 4 |
| 2026-06-03 | DUNCAN RONALD A | Director, Officer (President and CEO) | Open-market purchase | 5,000 | $21.11 | $105.5K | Form 4 |
| 2026-06-03 | DUNCAN RONALD A | Director, Officer (President and CEO) | Open-market purchase | 2,500 | $21.05 | $52.6K | Form 4 |
| 2026-03-02 | MALONE JOHN C | Director, 10% owner | Open-market purchase | 1,834 | $43.29 | $79.4K | Form 4 |
| 2026-02-20 | DUNCAN RONALD A | Director, Officer (President and CEO) | Option exercise / conversion (derivative) | 1,158 | $0.00 | $0 | Form 4 |
| 2026-02-20 | DUNCAN RONALD A | Director, Officer (President and CEO) | Shares withheld for taxes / exercise cost | 7,706 | $39.70 | $305.9K | Form 4 |
| 2026-02-20 | DUNCAN RONALD A | Director, Officer (President and CEO) | Option exercise / conversion | 1,158 | $0.00 | $0 | Form 4 |
| 2026-02-10 | DUNCAN RONALD A | Director, Officer (President and CEO) | Grant / award / vesting | 18,423 | $0.00 | $0 | Form 4 |
| 2026-01-05 | DUNCAN RONALD A | Director, Officer (President and CEO) | Option exercise / conversion (derivative) | 7,035 | $0.00 | $0 | Form 4 |
| 2026-01-05 | DUNCAN RONALD A | Director, Officer (President and CEO) | Shares withheld for taxes / exercise cost | 1,980 | $36.12 | $71.5K | Form 4 |
| 2026-01-05 | DUNCAN RONALD A | Director, Officer (President and CEO) | Option exercise / conversion | 7,035 | $0.00 | $0 | Form 4 |
| 2025-12-23 | MALONE JOHN C | Director, 10% owner | Grant / award / vesting | 1,552 | $27.20 | $42.2K | Form 4 |
| 2025-12-23 | MALONE JOHN C | Director, 10% owner | Grant / award / vesting | 3,206 | $27.20 | $87.2K | Form 4 |
| 2025-12-23 | MALONE JOHN C | Director, 10% owner | Grant / award / vesting | 133 | $27.20 | $3.6K | Form 4 |
| 2025-12-23 | MALONE JOHN C | Director, 10% owner | Grant / award / vesting | 68,954 | $27.20 | $1.88M | Form 4 |
| 2025-12-19 | DUNCAN RONALD A | Director, Officer (President and CEO) | Shares withheld for taxes / exercise cost | 174 | $36.39 | $6.3K | Form 4 |
| 2025-12-19 | ROMRELL LARRY E | Director | Option exercise / conversion (derivative) | 682 | $0.00 | $0 | Form 4 |
| 2025-12-19 | ROMRELL LARRY E | Director | Option exercise / conversion | 682 | $0.00 | $0 | Form 4 |
| 2025-12-19 | DEEVY BRIAN | Director | Option exercise / conversion (derivative) | 697 | $0.00 | $0 | Form 4 |
| 2025-12-19 | DEEVY BRIAN | Director | Option exercise / conversion | 697 | $0.00 | $0 | Form 4 |
| 2025-12-19 | Green Richard R | Director | Option exercise / conversion (derivative) | 654 | $0.00 | $0 | Form 4 |
| 2025-12-19 | Green Richard R | Director | Option exercise / conversion | 654 | $0.00 | $0 | Form 4 |
| 2025-12-19 | DUNCAN RONALD A | Director, Officer (President and CEO) | Option exercise / conversion (derivative) | 442 | $0.00 | $0 | Form 4 |
| 2025-12-19 | DUNCAN RONALD A | Director, Officer (President and CEO) | Option exercise / conversion | 442 | $0.00 | $0 | Form 4 |
| 2025-12-18 | ROMRELL LARRY E | Director | Grant / award / vesting (derivative) | 682 | $0.00 | $0 | Form 4 |
| 2025-12-18 | DEEVY BRIAN | Director | Grant / award / vesting (derivative) | 697 | $0.00 | $0 | Form 4 |
| 2025-12-18 | Green Richard R | Director | Grant / award / vesting (derivative) | 654 | $0.00 | $0 | Form 4 |
| 2025-12-18 | DUNCAN RONALD A | Director, Officer (President and CEO) | Grant / award / vesting (derivative) | 442 | $0.00 | $0 | Form 4 |
| 2025-12-18 | DUNCAN RONALD A | Director, Officer (President and CEO) | Grant / award / vesting (derivative) | 1,158 | $0.00 | $0 | Form 4 |
| 2025-12-18 | DUNCAN RONALD A | Director, Officer (President and CEO) | Grant / award / vesting (derivative) | 51,205 | $0.00 | $0 | Form 4 |
| 2025-12-15 | MALONE JOHN C | Director, 10% owner | Option exercise / conversion (derivative) | 16,376 | $0.00 | $0 | Form 4 |
| 2025-12-15 | MALONE JOHN C | Director, 10% owner | Option exercise / conversion (derivative) | 33,790 | $0.00 | $0 | Form 4 |
| 2025-12-15 | MALONE JOHN C | Director, 10% owner | Option exercise / conversion (derivative) | 1,408 | $0.00 | $0 | Form 4 |
| 2025-12-15 | MALONE JOHN C | Director, 10% owner | Option exercise / conversion (derivative) | 726,208 | $0.00 | $0 | Form 4 |
| 2025-12-15 | MALONE JOHN C | Director, 10% owner | Option exercise / conversion | 16,376 | $27.20 | $445.4K | Form 4 |
| 2025-12-15 | MALONE JOHN C | Director, 10% owner | Option exercise / conversion | 33,790 | $27.20 | $919.1K | Form 4 |
| 2025-12-15 | MALONE JOHN C | Director, 10% owner | Option exercise / conversion | 1,408 | $27.20 | $38.3K | Form 4 |
| 2025-12-15 | MALONE JOHN C | Director, 10% owner | Option exercise / conversion | 726,208 | $27.20 | $19.75M | Form 4 |
| 2025-12-12 | Gould Jedd | Director | Option exercise / conversion (derivative) | 5,757 | $0.00 | $0 | Form 4 |
| 2025-12-12 | Gould Jedd | Director | Option exercise / conversion | 5,757 | $27.20 | $156.6K | Form 4 |
Ask the chat about GLIBK's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: GCI Liberty (Series C) (GLIBK).
Last updated 2026-06-03 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.