Summary
Updated Aug 31, 2026
Dennis P. McNamara is Secretary of OPPENHEIMER HOLDINGS INC (OPY). 4 SEC Form 4 filings on record going back to 2025, most recently on 11 May 2026. Most recent open-market trade: sold $424K of OPY on 3 March 2026. Lifetime open-market sales: $571K.
Recent Transactions
3Every recent SEC Form 4 transaction Dennis P. McNamara has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Dennis P. McNamara go back to 2025: 4 primary Form 4 filings, an average of 2.0 per year. 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 Sector
No other insider has filed at Dennis P. McNamara's companies, so these are insiders reporting open-market trades at other companies in the same sector.
- Joshua D. Frank - $320.61M of JHG open-market activity in the last 12 months
- Genworth Holdings, Inc. - $276.92M of ACT open-market activity in the last 12 months
- LandBridge Holdings LLC - $268.81M of LB open-market activity in the last 12 months
- David N. Capobianco - $268.81M of LB open-market activity in the last 12 months
- Charles A. Davis - $237.77M of AXS open-market activity in the last 12 months
- FTV VII, L.P. - $234.21M of NP 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 Dennis P. McNamara?
Dennis P. McNamara is a corporate insider, tracked as Secretary of OPPENHEIMER HOLDINGS INC (OPY). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Dennis P. McNamara last file a Form 4?
The most recent primary Form 4 on record is dated 11 May 2026, one of 4 filings going back to 2025.
Has Dennis P. McNamara been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($571K) across all tracked filings.
Where can I see all of Dennis P. McNamara'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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