Comparable stake leader
Avidia Bank Employee Stock Ownership Plan Trust
SEC ownership of Avidia Bancorp, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0002058758.
Disclosed value leader
T. Rowe Price Investment Management, Inc.
Comparable rows
3/50
Latest evidence
13 Oct 2026
- Public ticker
- AVBC on NYSE
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Avidia Bank Employee Stock Ownership Plan Trust
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
3 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Avidia Bank Employee Stock Ownership Plan Trust
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
13 Oct 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0002058758
- Issuer location
- Hudson, MA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Avidia Bancorp, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Avidia Bank Employee Stoc...
Disclosed value leader
T. Rowe Price Investment ...
Comparable rows
3/50
Latest evidence
13 Oct 2026
13D/G
13F
3/4/5
Lead comparable stake: 8%
47 rows are not safely comparable across share classes.
13D/G row: Avidia Bank Employee Stock Ownership Plan Trust
Showing 1-8 of 50 holder rows.
Quick read
Avidia Bank Employee Stock Ownership Plan Trust leads the comparable SEC ownership view at 8%.
3 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Avidia Bank Employee Stock Ownership Plan Trust's linked filing trail.
Comparable ownership
Top 3
Avidia Bank Employee Stock Owners...
8%
T. Rowe Price Investment Manageme...
6.1%
BlackRock, Inc.
5.7%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Avidia Bank Employee Stock Ownership Plan Trust |
13D/G
|
8%
Reported 13D/G
· 30 Sep 2025
|
$23,995,134
1,606,100 shares
|
$0 | 30 Sep 2025 |
| T. Rowe Price Investment Management, Inc. |
13F
13D/G
Company
|
6.1%
Reported 13D/G
· 30 Sep 2025
|
$24,621,000
1,172,953 shares
|
— | 30 Jun 2026 |
| BlackRock, Inc. |
13F
13D/G
Company
|
5.7%
Reported 13D/G
· 30 Jun 2026
|
$24,173,554
1,151,670 shares
|
— | 30 Jun 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
—
denominator unverified
|
$16,808,645
800,793 shares
|
— | 30 Jun 2026 |
| FJ Capital Management LLC |
13F
Company
|
—
denominator unverified
|
$10,437,445
497,258 shares
|
— | 30 Jun 2026 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
—
denominator unverified
|
$9,292,757
442,624 shares
|
— | 30 Jun 2026 |
| Robert D. Cozzone |
3/4/5
President & CEO, Director
|
—
mixed-class rows
|
$5,658,637
729,974 shares
mixed-class rows
|
+$399,979 | 13 Oct 2026 |
| STATE STREET CORP |
13F
Company
|
—
denominator unverified
|
$5,274,766
251,299 shares
|
— | 30 Jun 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to buying over the last 12 months. Net value: +$2,159,720.
Buys
$2,271,408
Insiders: 12
Sells
$111,688
Insiders: 1
Net
+$2,159,720
Shares: +119,747
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 124,747
Shares: 5,000
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 26,781 | 5,000 | $586,569 | $111,688 | +$474,881 |
| 3-6 | 26,334 | 0 | $524,754 | $0 | +$524,754 |
| 6-9 | 15,219 | 0 | $289,592 | $0 | +$289,592 |
| 9-12 | 56,413 | 0 | $870,493 | $0 | +$870,493 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 20 reporting-owner rows connected to Avidia Bancorp, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
20
Largest Forms 3/4/5 holder
Robert D. Cozzone
Net 12M change
+$2,159,720
Latest report
13 Oct 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Robert D. Cozzone | President & CEO, Director | $5,658,637 | +$399,979 | +7.6% | Median | 13 Oct 2026 |
| Jonathan Michael Nelson | CFO and Treasurer | $2,540,052 | +$219,993 | +9.5% | Median | 13 Oct 2026 |
| Michael Neil Flanigan | Director | $2,356,645 | -$111,688 | -4.5% | Mixed | 18 Sep 2026 |
| Michael Dennis Murphy | Director, Chairman of the Board | $2,165,243 | +$400,185 | +23% | Mixed | 16 Sep 2026 |
| Joseph F. Grimaldo | Director | $1,883,453 | +$209,874 | +13% | Mixed | 16 Sep 2026 |
| Barry H. Jensen | EVP and Chief Admin Officer | $1,624,233 | +$365,752 | +29% | Median | 13 Oct 2026 |
| Gilles Michael O | Director | $1,521,187 | +$154,703 | +11% | Mixed | 16 Sep 2026 |
| James N. Ball | Director | $1,470,895 | +$183,656 | +14% | Mixed | 16 Sep 2026 |
| Nicolas Karmelek | EVP and CRO | $1,363,801 | +$45,989 | +3.5% | Median | 13 Oct 2026 |
| Donald J. Frost III | EVP- Consumer Banking | $1,236,729 | Median | 13 Oct 2026 | ||
| Thomas Doane | EVP- Human Resources | $1,140,176 | +$81,673 | +7.7% | Median | 13 Oct 2026 |
| Bartholomew H. Murphy Jr. | EVP & Chief Operating Off | $1,132,080 | +$65,553 | +6.1% | Mixed | 18 Mar 2026 |
| Mark O'Connell | Director | $1,051,095 | Mixed | 16 Sep 2026 | ||
| Jeffrey B. Leland | Director | $1,038,857 | Mixed | 16 Sep 2026 | ||
| Paul Blazar | Director | $1,037,136 | Mixed | 16 Sep 2026 | ||
| Carol Gallagher V | Director | $641,790 | Mixed | 16 Sep 2026 | ||
| Saul Kennedy O | Director | $632,344 | +$127,733 | +25% | Mixed | 16 Sep 2026 |
| Michael R. Girard | Director | $441,860 | +$16,318 | +3.8% | Mixed | 16 Sep 2026 |
| Vanessa Candela | Director | $423,494 | Mixed | 16 Sep 2026 | ||
| Robert W. Conery | EVP & Chief Operations Off | Mixed | 06 Aug 2025 |
Recent insider transactions for Avidia Bancorp, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Robert D. Cozzone | AVBC | Common Stock | Award | 19200% | 192,000 | 193,000 | 13 Oct 2026 | Direct | ||
| Robert D. Cozzone | AVBC | Stock Options | Award | 468,000 | 468,000 | 13 Oct 2026 | Direct | |||
| Thomas Doane | AVBC | Common Stock | Award | 22695% | 32,000 | 32,141 | 13 Oct 2026 | Direct | ||
| Thomas Doane | AVBC | Stock Options | Award | 80,000 | 80,000 | 13 Oct 2026 | Direct | |||
| Donald J. Frost III | AVBC | Common Stock | Award | 36,000 | 36,000 | 13 Oct 2026 | Direct | |||
| Donald J. Frost III | AVBC | Stock Options | Award | 90,000 | 90,000 | 13 Oct 2026 | Direct | |||
| Barry H. Jensen | AVBC | Common Stock | Award | 76.2% | 32,000 | 74,000 | 13 Oct 2026 | Direct | ||
| Barry H. Jensen | AVBC | Stock Options | Award | 80,000 | 80,000 | 13 Oct 2026 | Direct | |||
| Nicolas Karmelek | AVBC | Common Stock | Award | 414.1% | 32,000 | 39,727 | 13 Oct 2026 | Direct | ||
| Nicolas Karmelek | AVBC | Stock Options | Award | 80,000 | 80,000 | 13 Oct 2026 | Direct | |||
| Jonathan Michael Nelson | AVBC | Common Stock | Award | 399% | 76,000 | 95,045 | 13 Oct 2026 | Direct | ||
| Jonathan Michael Nelson | AVBC | Stock Options | Award | 190,000 | 190,000 | 13 Oct 2026 | Direct | |||
| Michael Neil Flanigan | AVBC | Common Stock | Sale | -100% | $111,688 | $22.34 | -5,000 | 0 | 18 Sep 2026 | By LLP |
| Michael Dennis Murphy | AVBC | Common Stock | Award | 41% | 20,076 | 69,076 | 16 Sep 2026 | Direct | ||
| Michael Dennis Murphy | AVBC | Stock Options | Award | 50,190 | 50,190 | 16 Sep 2026 | Direct | |||
| Jeffrey B. Leland | AVBC | Common Stock | Award | 446.1% | 20,076 | 24,576 | 16 Sep 2026 | Direct | ||
| Jeffrey B. Leland | AVBC | Stock Options | Award | 50,190 | 50,190 | 16 Sep 2026 | Direct | |||
| Joseph F. Grimaldo | AVBC | Common Stock | Award | 20,076 | 20,076 | 16 Sep 2026 | Direct | |||
| Joseph F. Grimaldo | AVBC | Stock Options | Award | 50,190 | 50,190 | 16 Sep 2026 | Direct | |||
| Michael R. Girard | AVBC | Common Stock | Award | 20,076 | 20,076 | 16 Sep 2026 | Direct | |||
| Michael R. Girard | AVBC | Stock Options | Award | 50,190 | 50,190 | 16 Sep 2026 | Direct | |||
| Gilles Michael O | AVBC | Common Stock | Award | 76.9% | 20,076 | 46,172 | 16 Sep 2026 | Direct | ||
| Gilles Michael O | AVBC | Stock Options | Award | 50,190 | 50,190 | 16 Sep 2026 | Direct | |||
| Carol Gallagher V | AVBC | Common Stock | Award | 191.2% | 20,076 | 30,576 | 16 Sep 2026 | Direct | ||
| Carol Gallagher V | AVBC | Stock Options | Award | 50,190 | 50,190 | 16 Sep 2026 | Direct | |||
| Michael Neil Flanigan | AVBC | Common Stock | Award | 20,076 | 20,076 | 16 Sep 2026 | Direct | |||
| Michael Neil Flanigan | AVBC | Stock Options | Award | 50,190 | 50,190 | 16 Sep 2026 | Direct | |||
| Vanessa Candela | AVBC | Common Stock | Award | 20076% | 20,076 | 20,176 | 16 Sep 2026 | Direct | ||
| Vanessa Candela | AVBC | Stock Options | Award | 50,190 | 50,190 | 16 Sep 2026 | Direct | |||
| Paul Blazar | AVBC | Common Stock | Award | 68.4% | 20,076 | 49,411 | 16 Sep 2026 | Direct | ||
| Paul Blazar | AVBC | Stock Options | Award | 50,190 | 50,190 | 16 Sep 2026 | Direct | |||
| James N. Ball | AVBC | Common Stock | Award | 20,076 | 20,076 | 16 Sep 2026 | Direct | |||
| James N. Ball | AVBC | Stock Options | Award | 50,190 | 50,190 | 16 Sep 2026 | Direct | |||
| Saul Kennedy O | AVBC | Common Stock | Award | 199.8% | 20,076 | 30,126 | 16 Sep 2026 | Direct | ||
| Saul Kennedy O | AVBC | Stock Options | Award | 50,190 | 50,190 | 16 Sep 2026 | Direct | |||
| Mark O'Connell | AVBC | Common Stock | Award | 66.9% | 20,076 | 50,076 | 16 Sep 2026 | Direct | ||
| Mark O'Connell | AVBC | Stock Options | Award | 50,190 | 50,190 | 16 Sep 2026 | Direct | |||
| Michael Dennis Murphy | AVBC | Common Stock | Purchase | 270.3% | $110,600 | $22.12 | 5,000 | 6,850 | 14 Sep 2026 | By Spouse |
| Jonathan Michael Nelson | AVBC | Common Stock | Purchase | 30.9% | $99,855 | $22.19 | 4,500 | 19,045 | 03 Sep 2026 | Direct |
| Joseph F. Grimaldo | AVBC | Common Stock | Purchase | 11.2% | $110,088 | $22.02 | 5,000 | 49,655 | 26 Aug 2026 | By Trust |
| Thomas Doane | AVBC | Common Stock | Purchase | 9.75% | $38,507 | $22.31 | 1,726 | 19,422 | 17 Aug 2026 | By 401(k) |
| Saul Kennedy O | AVBC | Common Stock | Purchase | 142.2% | $127,733 | $21.65 | 5,900 | 10,050 | 11 Aug 2026 | Direct |
| Joseph F. Grimaldo | AVBC | Common Stock | Purchase | 11.6% | $99,786 | $21.44 | 4,655 | 44,655 | 11 Aug 2026 | By Trust |
| Jonathan Michael Nelson | AVBC | Common Stock | Purchase | 7.9% | $20,128 | $18.90 | 1,065 | 14,545 | 03 Jun 2026 | Direct |
| Robert D. Cozzone | AVBC | Common Stock | Purchase | 3.26% | $40,006 | $18.80 | 2,128 | 67,357 | 29 May 2026 | By 401(k) |
| Nicolas Karmelek | AVBC | Common Stock | Purchase | 0.25% | $363 | $19.08 | 19 | 7,727 | 27 May 2026 | Direct |
| Barry H. Jensen | AVBC | Common Stock | Purchase | 1.2% | $9,440 | $18.88 | 500 | 42,000 | 18 May 2026 | Direct |
| Gilles Michael O | AVBC | Common Stock | Purchase | 25% | $18,916 | $18.92 | 1,000 | 5,000 | 15 May 2026 | By Spouse |
| Gilles Michael O | AVBC | Common Stock | Purchase | 5.26% | $19,170 | $19.17 | 1,000 | 20,000 | 15 May 2026 | By IRA |
| Gilles Michael O | AVBC | Common Stock | Purchase | 3.98% | $19,120 | $19.12 | 1,000 | 26,096 | 15 May 2026 | Direct |
* marks a reported price that did not pass the local price check.