Michael Dennis Murphy - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Michael Dennis Murphy is a corporate insider tracked by InsiderAlpha. No SEC Form 4 filings recorded in the last 90 days. Lifetime open-market purchases: $290K.
Profile
Michael Dennis Murphy is Director at Avidia Bancorp, Inc. (AVBC). Murphy has reported 3 insider filings with the SEC since 2025. The most recent filing was in April 2026.
| Role | Director |
|---|---|
| Notability | 26/100 |
Board memberships
- Avidia Bancorp, Inc.
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.
| Total purchases tracked | 5 |
|---|
Trading Pattern
InsiderAlpha's records for Michael Dennis Murphy go back to 2025: 3 primary Form 4 filings, an average of 1.5 per year. The typical open-market purchase is $58K (5 buys totaling $290K). The largest single buy on record is $100K of AVBC in 2025. 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 Michael Dennis Murphy 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 Avidia Bancorp, Inc. (AVBC) - 3 filings, 2025 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-04-29 | AVBC | Avidia Bancorp, Inc. | P - Open-market purchase | 1.9K | $20.94 | $39K |
| 2025-12-03 | AVBC | Avidia Bancorp, Inc. | P - Open-market purchase | 6.2K | $16.00 | $100K |
| 2025-11-07 | AVBC | Avidia Bancorp, Inc. | P - Open-market purchase | 1.0K | $15.10 | $15K |
| 2025-11-07 | AVBC | Avidia Bancorp, Inc. | P - Open-market purchase | 2.5K | $15.11 | $38K |
| 2025-11-07 | AVBC | Avidia Bancorp, Inc. | P - Open-market purchase | 6.5K | $15.12 | $98K |
Most Active Insiders Right Now
Michael Dennis Murphy has no recent co-filers at the same companies, so here are the insiders with the largest open-market activity across the market in the last 90 days.
- MetLife Investment Management, LLC - $1600000.00B of FINS open-market activity in the last 90 days
- Magnetar Financial LLC - $16357.48B of CRWV open-market activity in the last 90 days
- Marianne Okland - $18.46B of STNG open-market activity in the last 90 days
- VisionWave Holdings, Inc. - $14.13B of SVRE open-market activity in the last 90 days
- Vanessa Allen Sutherland - $7.44B of PSX open-market activity in the last 90 days
- AI Alpine (Luxembourg) S.a.r.l. - $2.69B of INIO open-market activity in the last 90 days
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Andrew J. Mills
- Charles N. Mills
- Kevin J. Mills
- Mink Brook Asset Management LLC
- Shankh Mitra
- MITSUI SUMITOMO INSURANCE CO LTD
- Arturo R. Moreno
- Matthew T. Moroun
Frequently Asked Questions
Who is Michael Dennis Murphy?
Michael Dennis Murphy is Director at Avidia Bancorp, Inc. (AVBC). Murphy has reported 3 insider filings with the SEC since 2025. The most recent filing was in April 2026.…
Has Michael Dennis Murphy been buying or selling stock?
Recorded transactions: 5 open-market purchases ($290K) and 0 open-market sales across all tracked filings.
How accurate is Michael Dennis Murphy's historical track record?
Across 5 tracked purchases, Michael Dennis Murphy 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 Michael Dennis Murphy'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 Michael Dennis Murphy profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.