John C. Hill - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
John C. Hill has filed 1 SEC Form 4 filing across 1 company in the last 90 days - buying. Lifetime open-market purchases: $106K.
Profile
John C. Hill serves as CEO & President of CENTRAL SECURITIES CORP (CETCET). Hill has reported 9 insider filings with the SEC since 2024. The most recent filing was in June 2026.
| Role | CEO & President, Director |
|---|---|
| Notability | 40/100 |
Board memberships
- CENTRAL SECURITIES CORP
Reported roles
- CEO & President
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| Total purchases tracked | 5 |
|---|
Trading Pattern
InsiderAlpha's records for John C. Hill go back to 2024: 5 primary Form 4 filings, an average of 1.7 per year. The typical open-market purchase is $15K (7 buys totaling $106K). The largest single buy on record is $28K of CET in 2024. 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.
Career & Filing History
Every role John C. Hill has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- CEO & President, Director at CENTRAL SECURITIES CORP (CET) - 5 filings, 2024 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-30 | CET | CENTRAL SECURITIES CORP | P - Open-market purchase | 5 | $51.87 | $259 |
| 2026-06-30 | CET | CENTRAL SECURITIES CORP | P - Open-market purchase | 228 | $51.87 | $12K |
| 2026-01-06 | CET | CENTRAL SECURITIES CORP | P - Open-market purchase | 500 | $50.91 | $25K |
| 2025-12-30 | CET | CENTRAL SECURITIES CORP | P - Open-market purchase | 500 | $50.91 | $25K |
| 2025-11-12 | CET | CENTRAL SECURITIES CORP | J - Other acquisition / disposition | 4 | $47.94 | $192 |
| 2025-11-12 | CET | CENTRAL SECURITIES CORP | P - Open-market purchase | 100 | $50.70 | $5K |
| 2025-11-12 | CET | CENTRAL SECURITIES CORP | J - Other acquisition / disposition | 185 | $47.94 | $9K |
| 2024-11-01 | CET | CENTRAL SECURITIES CORP | P - Open-market purchase | 200 | $47.13 | $9K |
| 2024-11-01 | CET | CENTRAL SECURITIES CORP | J - Other acquisition / disposition | 3 | $43.87 | $132 |
| 2024-11-01 | CET | CENTRAL SECURITIES CORP | P - Open-market purchase | 600 | $46.71 | $28K |
| 2024-11-01 | CET | CENTRAL SECURITIES CORP | J - Other acquisition / disposition | 149 | $43.87 | $7K |
Companies - Last 90 Days
- CENTRAL SECURITIES CORP (CET) - 1 filing, last 2026-06-30
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies John C. Hill has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- Leo Price Blackford - $11K of CET open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Marc Johnson
- James Jones
- Andrew T. Kaplan
- A. J. Kazimi
- Michael John Kazley
- Kennedy Lewis Investment Holdings II LLC
- KENNEDY LEWIS MANAGEMENT LP
- James M. Kilts
Frequently Asked Questions
Who is John C. Hill?
John C. Hill serves as CEO & President of CENTRAL SECURITIES CORP (CETCET). Hill has reported 9 insider filings with the SEC since 2024. The most recent filing was in June 2026.…
How many SEC Form 4 filings has John C. Hill submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has John C. Hill been buying or selling stock?
Recorded transactions: 7 open-market purchases ($106K) and 0 open-market sales across all tracked filings.
How accurate is John C. Hill's historical track record?
Across 5 tracked purchases, John C. Hill averaged no 30-day data yet with a win rate pending. InsiderAlpha rates the track record at –/5 stars.
Where can I see all of John C. Hill'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.
Learn More
Open the live John C. Hill profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.