Summary
Updated Aug 31, 2026
Bradford T. Whitmore is Director, 10% Owner of ULTRALIFE CORP (ULBI). 5 SEC Form 4 filings on record going back to 2025, most recently on 26 May 2026. Most recent open-market trade: bought $459K of ULBI on 26 May 2026. Lifetime open-market purchases: $2.87M. Historical track record: 4/5 stars across 13 tracked purchases.
Recent Transactions
13Every recent SEC Form 4 transaction Bradford T. Whitmore 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 | 13 |
| Purchases with forward-return data | 13 |
| 30-day win rate | 85% |
| 90-day win rate | 54% |
| Avg 5-day return | +6.06% |
| Avg 30-day return | +6.94% |
| Avg 90-day return | +1.84% |
| Best 30-day return | +21.59% |
Trading Pattern
InsiderAlpha's records for Bradford T. Whitmore go back to 2025: 5 primary Form 4 filings, an average of 2.5 per year. The typical open-market purchase is $221K (13 buys totaling $2.87M). The largest single buy on record is $636K of ULBI in 2026. 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 Bradford T. Whitmore 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.
- Michael Edward Manna - $35K of ULBI open-market activity in the last 12 months
- W. Shaw Robert - $10K of ULBI 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 Bradford T. Whitmore?
Bradford T. Whitmore is a corporate insider, tracked as Director, 10% Owner of ULTRALIFE CORP (ULBI). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Bradford T. Whitmore last file a Form 4?
The most recent primary Form 4 on record is dated 26 May 2026, one of 5 filings going back to 2025.
Has Bradford T. Whitmore been buying or selling stock?
Recorded transactions: 13 open-market purchases ($2.87M) and 0 open-market sales across all tracked filings.
How accurate is Bradford T. Whitmore's historical track record?
Across 13 tracked purchases, Bradford T. Whitmore averaged +6.9% avg 30-day return with a 85% 30-day win rate. InsiderAlpha rates the track record at 4/5 stars.
Where can I see all of Bradford T. Whitmore'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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