GREGORY B MAFFEI
CIK 1099636 · President/CEO · last filed 2026-06-02
GREGORY B MAFFEI is a President/CEO who has filed 447 SEC Form 4 insider transactions across 39 companies since 2007. The most recent filing, for SIRI, was dated Jun 2, 2026. Across all open-market trades the lifetime net is −$420.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $457.4M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$457.39M
Companies
39
Total Filings
447
Lifetime Open-Market Net
-$420.48M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| SIRI | Director | 5,385,039 | $27.52 | $148.20M | -$474.3K | 64 | 2026-06-02 |
| ZG | Director | 637,783 | $32.22 | $20.55M | -$2.78M | 21 | 2026-03-03 |
| TRIP | Director | 155,078 | $12.41 | $1.92M | $1.12M | 15 | 2025-06-20 |
| QVC Group, Inc. (QRTEP) Delisted | Chairman of the Board | 8,125,782 | $39.91 | $324.30M | -$3.6K | 13 | 2025-03-07 |
| LBRDP | President/CEO | 1,565,299 | $22.00 | $34.44M | -$28.45M | 11 | 2024-12-19 |
| LBRDK | President/CEO | 1,398,523 | $34.19 | $47.82M | -$110.52M | 30 | 2024-12-19 |
| FWONK | President, CEO | 1,372,395 | $88.93 | $122.05M | -$106.77M | 41 | 2024-12-18 |
| BATRK | President, CEO | 1,158,836 | $50.72 | $58.78M | $0 | 1 | 2024-08-30 |
| Liberty Media Corp (LSXMK) Delisted | President, CEO | 4,733,709 | $22.29 | $105.51M | -$101.40M | 52 | 2024-08-26 |
| LYV | Director | 111,602 | $172.51 | $19.25M | $0 | 15 | 2024-06-14 |
| CHTR | Director | 7,569 | $145.82 | $1.10M | -$2.1K | 10 | 2024-04-25 |
| Liberty TripAdvisor Holdings, Inc. (LTRPB) Delisted | President/CEO | 3,593,255 | $10.50 | $37.73M | $315.9K | 14 | 2023-06-02 |
| GLIBA | President and CEO | 0 | $22.44 | $0 | $0 | 1 | 2020-12-22 |
| GRIZZLY MERGER SUB 1, LLC (GLIBP) Delisted | President and CEO | 935,188 | — | — | -$6.30M | 9 | 2020-12-14 |
| Liberty Media Corp (LSXMR) Delisted | President, CEO | 3,124,096 | — | — | $0 | 1 | 2020-06-04 |
| QVC Group, Inc. (QRTEB) Delisted | Chairman of the Board | 684,171 | $2.00 | $1.37M | $1.89M | 9 | 2020-04-17 |
| P | Director | 0 | $72.31 | $0 | $0 | 3 | 2019-02-01 |
| Liberty Expedia Holdings, Inc. (LEXEB) Delisted | 10%+ Owner | 425,876 | — | — | $0 | 1 | 2018-12-21 |
| QVC Group, Inc. (QVCB) Delisted | President, CEO | 416,464 | — | — | -$8.24M | 17 | 2018-03-07 |
| Starz Acquisition LLC (STRZB) Delisted | Director | 1,368,204 | — | — | $0 | 1 | 2016-12-02 |
| Liberty Media Corp (LSXM.B) Delisted | President, CEO | 696,333 | — | — | $0 | 4 | 2016-07-11 |
| Liberty Media Corp (LSXM.K) Delisted | President, CEO | 913,739 | — | — | $0 | 1 | 2016-04-22 |
| Liberty Media Corp (LMCK) Delisted | President, CEO | 3,676,901 | — | — | -$2.44M | 7 | 2016-03-31 |
| CHARTER COMMUNICATIONS, INC. /MO/ (LBRD.K) Delisted | President/CEO | 388,256 | — | — | $0 | 3 | 2016-01-04 |
| Starz Acquisition LLC (STRZA) Delisted | Director | 1,822,456 | — | — | -$6.68M | 6 | 2015-12-17 |
| Z | Director | 0 | $32.03 | $0 | -$1.20M | 12 | 2015-03-04 |
| CHARTER COMMUNICATIONS, INC. /MO/ (LBRK.R) Delisted | President/CEO | 437,529 | — | — | $0 | 3 | 2015-01-02 |
| Liberty TripAdvisor Holdings, Inc. (LTRP.B) Delisted | President/CEO | 3,002,051 | — | — | $50.36M | 1 | 2014-12-23 |
| QVC Group, Inc. (LVNTA) Delisted | President, CEO | 3,874,887 | — | — | -$29.50M | 9 | 2014-03-26 |
| Liberty Media Corp (LMCB) Delisted | President, CEO | 1,750,277 | — | — | $0 | 2 | 2014-03-26 |
| BARNES & NOBLE INC (BKSw) Delisted | Director | 25,518 | — | — | $0 | 3 | 2013-09-12 |
| Starz Acquisition LLC (STRZ.B) Delisted | Chairman of the Board | 1,732,954 | — | — | $0 | 1 | 2013-03-06 |
| Starz Acquisition LLC (LMCA) Delisted | President, CEO | 1,736,402 | — | — | -$39.20M | 6 | 2013-01-02 |
| EA | Director | 16,197 | $203.27 | $3.29M | $0 | 3 | 2012-07-27 |
| ELECTRONIC ARTS INC. (ERTS) Delisted | Director | 13,914 | — | — | $0 | 10 | 2011-11-02 |
| Starz Acquisition LLC (LCPAD) Delisted | President, CEO | 44,604 | — | — | $0 | 1 | 2011-09-27 |
| QVC Group, Inc. (LINTB) Delisted | President, CEO | 0 | — | — | -$4.60M | 12 | 2011-09-27 |
| QVC Group, Inc. (LSTZA) Delisted | President, CEO | 524,665 | — | — | $0 | 5 | 2011-07-07 |
| DIRECTV (DTV) Delisted | Director | 28,560 | — | — | -$25.59M | 13 | 2010-03-23 |
Recent Filings
447 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-06-02 | SIRI | Grant (A) | +6,775 | $0 | EDGAR |
| 2026-05-28 | SIRI | Grant (A) | +83 | $0 | EDGAR |
| 2026-03-24 | SIRI | Gift (G) | −1,108 | $0 | EDGAR |
| 2026-03-03 | ZG | Mixed | +8,785 | -$2.2K | EDGAR |
| 2026-03-03 | ZG | Mixed | +8,785 | -$2.2K | EDGAR |
| 2026-03-02 | SIRI | Grant (A) | +66,862 | $0 | EDGAR |
| 2025-11-25 | SIRI | Grant (A) | +98 | $0 | EDGAR |
| 2025-08-28 | SIRI | Grant (A) | +92 | $0 | EDGAR |
| 2025-06-20 | TRIP | Grant (A) | +19,171 | $0 | EDGAR |
| 2025-06-02 | SIRI | Grant (A) | +7,816 | $0 | EDGAR |
Showing 1–10 of 447
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Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.