Summary
Updated Aug 31, 2026
John C. Malone is Director, 10% Owner of Liberty Capital Corp/NV (GLIBK). 34 SEC Form 4 filings on record going back to 2024, most recently on 28 August 2026. Most recent open-market trade: bought $57K of LILA on 18 August 2026. Lifetime open-market purchases: $172.61M. Lifetime open-market sales: $108.98M. Historical track record: 4/5 stars across 36 tracked purchases.
Recent Transactions
20Every recent SEC Form 4 transaction John C. Malone has reported, most recent first.
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realized performance after each tracked open-market purchase.
| Metric | Value |
|---|---|
| InsiderAlpha rating | ★★★★☆ (4/5) |
| Total purchases tracked | 36 |
| Purchases with forward-return data | 36 |
| 30-day win rate | 64% |
| 90-day win rate | 50% |
| Avg 5-day return | +1.06% |
| Avg 30-day return | -0.30% |
| Avg 90-day return | -0.21% |
| Best 30-day return | +11.63% |
Trading Pattern
InsiderAlpha's records for John C. Malone go back to 2024: 34 primary Form 4 filings, an average of 11.3 per year. The typical open-market purchase is $2.98M (58 buys totaling $172.61M). The largest single buy on record is $106.54M of LILA in 2026. Sales side: 4 recorded sales totaling $108.98M, so the filing history runs buy-heavy by dollar value. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies John C. Malone files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- J. David Wargo - $4.06M of LBRDK open-market activity in the last 12 months
- Ronald A. Duncan - $1.42M of GLIBK open-market activity in the last 12 months
- Balan Nair - $1.16M of LILA open-market activity in the last 12 months
- Michael T. Fries - $1.01M of LILA open-market activity in the last 12 months
- Charles H. R. Bracken - $934K of LILA open-market activity in the last 12 months
- Brian D. Zook - $759K of LILA open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is John C. Malone?
John C. Malone is a corporate insider, tracked as Director, 10% Owner of Liberty Capital Corp/NV (GLIBK). InsiderAlpha holds 34 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has John C. Malone submitted recently?
11 primary Form 4 filings in the last 90 days, covering 3 companies.
Has John C. Malone been buying or selling stock?
Recorded transactions: 58 open-market purchases ($172.61M) and 4 open-market sales ($108.98M) across all tracked filings.
How accurate is John C. Malone's historical track record?
Across 36 tracked purchases, John C. Malone averaged -0.3% avg 30-day return with a 64% 30-day win rate. InsiderAlpha rates the track record at 4/5 stars.
Where can I see all of John C. Malone's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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