Summary
Updated Aug 31, 2026
David D. Grumhaus Jr. is President and CEO of Duff Phelps Utility Infrastructure Fund Inc. (DPG). 4 SEC Form 4 filings on record going back to 2024, most recently on 26 August 2025. Most recent open-market trade: bought $15K of DPG on 26 August 2025. Lifetime open-market purchases: $69K. Historical track record: 1/5 stars across 4 tracked purchases.
Recent Transactions
4Every recent SEC Form 4 transaction David D. Grumhaus Jr. 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 | ★☆☆☆☆ (1/5) |
| Total purchases tracked | 4 |
| Purchases with forward-return data | 4 |
| 30-day win rate | 0% |
| 90-day win rate | 25% |
| Avg 5-day return | -0.76% |
| Avg 30-day return | -3.08% |
| Avg 90-day return | -0.62% |
| Best 30-day return | +0.00% |
Trading Pattern
InsiderAlpha's records for David D. Grumhaus Jr. go back to 2024: 4 primary Form 4 filings, an average of 1.3 per year. The typical open-market purchase is $17K (4 buys totaling $69K). The largest single buy on record is $19K of DNP 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.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies David D. Grumhaus Jr. 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.
- Mark G. Kahrer - $204K of DNP open-market activity in the last 12 months
- William Patrick Bradley III - $45K of DPG 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 David D. Grumhaus Jr.?
David D. Grumhaus Jr. is a corporate insider, tracked as President and CEO of Duff Phelps Utility Infrastructure Fund Inc. (DPG). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did David D. Grumhaus Jr. last file a Form 4?
The most recent primary Form 4 on record is dated 26 August 2025, one of 4 filings going back to 2024.
Has David D. Grumhaus Jr. been buying or selling stock?
Recorded transactions: 4 open-market purchases ($69K) and 0 open-market sales across all tracked filings.
How accurate is David D. Grumhaus Jr.'s historical track record?
Across 4 tracked purchases, David D. Grumhaus Jr. averaged -3.1% avg 30-day return with a 0% 30-day win rate. InsiderAlpha rates the track record at 1/5 stars.
Where can I see all of David D. Grumhaus Jr.'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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