Diane W. Strong-Treister - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Diane W. Strong-Treister has filed 1 SEC Form 4 filing across 1 company in the last 90 days - buying. Lifetime open-market purchases: $103K. Historical track record: 4/5 stars across 6 tracked purchases.
Profile
Diane W. Strong-Treister holds the role of Director at CITY HOLDING CO (CHCO). Strong-Treister has reported 8 insider filings with the SEC since 2024. The most recent filing was in July 2026.
| Role | Director |
|---|---|
| Notability | 26/100 |
Board memberships
- CITY HOLDING CO
Reported roles
- Director
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.
| InsiderAlpha rating | ★★★★☆ (4/5) |
|---|---|
| Total purchases tracked | 6 |
| Purchases with forward-return data | 6 |
| 30-day win rate | 83% |
| 90-day win rate | 83% |
| Avg 5-day return | +0.46% |
| Avg 30-day return | +5.47% |
| Avg 90-day return | +4.05% |
| Best 30-day return | +16.55% |
Trading Pattern
InsiderAlpha's records for Diane W. Strong-Treister go back to 2024: 8 primary Form 4 filings, an average of 2.7 per year. The typical open-market purchase is $15K (7 buys totaling $103K). The largest single buy on record is $15K of CHCO in 2024. 6 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Career & Filing History
Every role Diane W. Strong-Treister 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.
- Director at CITY HOLDING CO (CHCO) - 8 filings, 2024 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-21 | CHCO | CITY HOLDING CO | P - Open-market purchase [10b5-1] | 110 | $134.55 | $15K |
| 2026-04-20 | CHCO | CITY HOLDING CO | P - Open-market purchase [10b5-1] | 119 | $126.36 | $15K |
| 2026-03-12 | CHCO | CITY HOLDING CO | P - Open-market purchase [10b5-1] | 126 | $115.88 | $15K |
| 2026-03-09 | CHCO | CITY HOLDING CO | P - Open-market purchase [10b5-1] | 129 | $115.88 | $15K |
| 2026-01-29 | CHCO | CITY HOLDING CO | A - Grant or award | 265 | $0.00 | |
| 2025-10-17 | CHCO | CITY HOLDING CO | P - Open-market purchase [10b5-1] | 128 | $117.23 | $15K |
| 2025-07-29 | CHCO | CITY HOLDING CO | P - Open-market purchase | 102 | $127.05 | $13K |
| 2024-10-10 | CHCO | CITY HOLDING CO | P - Open-market purchase [10b5-1] | 132 | $115.02 | $15K |
Companies - Last 90 Days
- CITY HOLDING CO (CHCO) - 1 filing, last 2026-07-21
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Diane W. Strong-Treister 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.
- Charles R. Hageboeck - $2.06M of CHCO open-market activity in the last 12 months
- David L. Bumgarner - $295K of CHCO open-market activity in the last 12 months
- Jeffrey Dale Legge - $164K of CHCO open-market activity in the last 12 months
- Michael T. Quinlan Jr. - $153K of CHCO open-market activity in the last 12 months
- Robert D. Fisher - $84K of CHCO open-market activity in the last 12 months
- Sharon H. Rowe - $73K of CHCO open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Robert E. Dixon
- Romeo R. Dizon
- Kevin Michael Donahue
- DONEGAL MUTUAL INSURANCE CO
- DORCHESTER MINERALS OPERATING LP
- Robert W. Duggan
- John Earl
- EcoR1 Capital, LLC
Frequently Asked Questions
Who is Diane W. Strong-Treister?
Diane W. Strong-Treister holds the role of Director at CITY HOLDING CO (CHCO). Strong-Treister has reported 8 insider filings with the SEC since 2024. The most recent filing was in July 2026.…
How many SEC Form 4 filings has Diane W. Strong-Treister submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Diane W. Strong-Treister been buying or selling stock?
Recorded transactions: 7 open-market purchases ($103K) and 0 open-market sales across all tracked filings.
How accurate is Diane W. Strong-Treister's historical track record?
Across 6 tracked purchases, Diane W. Strong-Treister averaged +5.5% avg 30-day return with a 83% 30-day win rate. InsiderAlpha rates the track record at 4/5 stars.
Where can I see all of Diane W. Strong-Treister'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 Diane W. Strong-Treister profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.