Comparable stake leader
BlackRock, Inc.
SEC ownership of ENTERPRISE BANCORP INC /MA/
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001018399.
Disclosed value leader
BlackRock, Inc.
Comparable rows
1/12
Latest evidence
31 Mar 2025
- Parsed ownership sources
-
13D/G and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
1 of 12
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
31 Mar 2025
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001018399
- Issuer location
- Lowell, 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 ENTERPRISE BANCORP INC /MA/ (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
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
1/12
Latest evidence
31 Mar 2025
13D/G
3/4/5
Lead comparable stake: 5.8%
11 rows are not safely comparable across share classes.
13D/G row: BlackRock, Inc.
Showing 1-8 of 12 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 5.8%.
1 of 12 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 BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 1
BlackRock, Inc.
5.8%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 12 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13D/G
|
5.8%
|
$24,932,395
717,479 shares
|
$0 | 31 Mar 2025 |
| John P. Clancy Jr. |
3/4/5
CEO, Director
|
—
class O/S missing
|
$4,604,860
188,492 shares
|
— | 23 Apr 2024 |
| Diane J. Silva |
3/4/5
EVP - Principal Subsidiary
|
—
class O/S missing
|
$2,109,385
69,801 shares
|
— | 20 Oct 2022 |
| Stephen J. Irish |
3/4/5
EVP - Principal Subsidiary
|
—
class O/S missing
|
$1,127,860
46,167 shares
|
— | 23 Apr 2024 |
| Shelagh E. Mahoney |
3/4/5
Director
|
—
class O/S missing
|
$921,623
30,497 shares
|
— | 23 Jan 2024 |
| Luis M. Pedroso |
3/4/5
Director
|
—
class O/S missing
|
$769,973
25,479 shares
|
— | 01 Sep 2022 |
| Marlene P. Hoyt |
3/4/5
EVP-Principal Subsidiary
|
—
class O/S missing
|
$701,764
23,222 shares
|
— | 20 Oct 2022 |
| Michael John Gallagher |
3/4/5
EVP-Principal Subsidiary
|
—
class O/S missing
|
$408,772
13,527 shares
|
— | 21 Mar 2023 |
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
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 13 Aug 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 36 reporting-owner rows connected to ENTERPRISE BANCORP INC /MA/. Open a relationship link for the CIK-to-CIK filing trail.
Rows
36
Largest Forms 3/4/5 holder
John P. Clancy Jr.
Net 12M change
$0
Latest report
01 Jul 2025
Recent insider transactions for ENTERPRISE BANCORP INC /MA/
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| No insider transactions were found in the last 12 months for this issuer. | ||||||||||
* marks a reported price that did not pass the local price check.