Latest filingSep 02, 2026Most recent Form 4
EBC
Eastern Bankshares, Inc.
NasdaqFinancialsSavings Institution, Federally Chartered
Insider activity for last month from 08/03 to 09/03. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total buying$00 buys
Total selling$175M7 sells
Net open-market-$175M3 insiders
Open-market mix
Buy vs sell distribution by transaction countInsider activity report
Monthly open-market purchase and sale counts Buys Sells
Transaction codes
By Form 4 transaction code in selected period7transactions
- S · Open-market sells · dominant7 · 100%
Activity by reported role
A joint filing can contribute to multiple roles7transactions
- Director · dominant4 · 57%
- CIO2 · 29%
- EV1 · 14%
Distinct insiders active
Reporting-owner CIKs by month · peak Sep 2026 (2)Aug 2026Sep 2026
Reported Holdings After
Separated by insider, security, and ownership typeCasey Joseph FCommon Stock · Indirect · Traditional IRA
60,301Aug 25, 2026
Westermann Donald MichaelCommon Stock · Indirect · By 401(k)
0Sep 01, 2026
Westermann Donald MichaelCommon Stock · Direct
22,565Sep 01, 2026
Antonakes Steven LouisCommon Stock · Direct
61,790Sep 01, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells redAug 03 → Sep 03
LessMore
Top insiders
By absolute net value across the selected period- WM-$719.6k
- CF-$694.6k
- AL-$296.3k
Filing detail checks
Secondary metrics for the selected periodFiling-only signals
Deterministic matches in the selected period
EBC transaction history
Filters apply within this company and selected period by default| Ticker | Insider | Role | Type | Shares | Value | Code | Signals | 90d return | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|---|
| EBC | Antonakes Steven Louis | EV | sale | 13.5k | -$29.6M | S | — | 0.0% | 09/02 | 09/01 |
| EBC | Westermann Donald Michael | CIO | sale | 23.0k | -$49.2M | S | — | 0.0% | 09/02 | 09/01 |
| EBC | Westermann Donald Michael | CIO | sale | 10.4k | -$22.6M | S | — | 0.0% | 09/02 | 09/01 |
| EBC | CASEY JOSEPH F | DIR | sale10b5-1 | 10.0k | -$22.9M | S | −0.8% | 08/24 | 08/21 | |
| EBC | CASEY JOSEPH F | DIR | sale10b5-1 | 10.0k | -$22.8M | S | −2.0% | 08/21 | 08/20 | |
| EBC | CASEY JOSEPH F | DIR | sale10b5-1 | 10.0k | -$23.6M | S | −5.5% | 08/20 | 08/19 |
Eastern Bankshares, Inc. Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at Eastern Bankshares, Inc.?
Antonakes Steven Louis, Westermann Donald Michael, CASEY JOSEPH F.
When was the latest reported open-market purchase?
No code-P purchase is available for this period.
When was the latest reported open-market sale?
Antonakes Steven Louis reported a sale on Sep 01, 2026 valued at $29.6M. Read the SEC filing.
What is the recent purchase and sale balance?
Net open-market selling in the selected period was $1,750,825.36. Sales can occur for many non-investment reasons.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.