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.

Latest filingSep 02, 2026Most recent Form 4
Total buying$00 buys
Total selling$175M7 sells
Net open-market-$175M3 insiders
Open-market mix
Buy vs sell distribution by transaction count
7 transactions
0 buys0%·100%7 sells

Insider activity report

Monthly open-market purchase and sale counts
Buys Sells
530-3-5transactionsAug 2026 sells: 4 transactions · $73.4M4AugSep 2026 sells: 3 transactions · $101M3Sep

Transaction codes

By Form 4 transaction code in selected period
7transactions
  • S · Open-market sells · dominant7 · 100%

Activity by reported role

A joint filing can contribute to multiple roles
7transactions
  • Director · dominant4 · 57%
  • CIO2 · 29%
  • EV1 · 14%

Distinct insiders active

Reporting-owner CIKs by month · peak Sep 2026 (2)
Aug 2026Sep 2026
3distinct insiders in 2 months

Reported Holdings After

Separated by insider, security, and ownership type
Casey Joseph FCommon Stock · Indirect · Traditional IRA
92.1k60.3kAug 19, 2026 · 92,079 shares owned afterAug 20, 2026 · 82,079 shares owned afterAug 21, 2026 · 72,079 shares owned afterAug 25, 2026 · 60,301 shares owned afterAug 19, 2026Aug 25, 2026
60,301Aug 25, 2026
Westermann Donald MichaelCommon Stock · Indirect · By 401(k)
00Sep 01, 2026 · 0 shares owned afterSep 01, 2026Sep 01, 2026
0Sep 01, 2026
Westermann Donald MichaelCommon Stock · Direct
22.6k22.6kSep 01, 2026 · 22,565 shares owned afterSep 01, 2026Sep 01, 2026
22,565Sep 01, 2026
Antonakes Steven LouisCommon Stock · Direct
61.8k61.8kSep 01, 2026 · 61,790 shares owned afterSep 01, 2026Sep 01, 2026
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 red
0 active days
Aug 03Sep 03
LessMore

Filing detail checks

Secondary metrics for the selected period
Largest buy-
Largest sale$49.2M
10b5-1 detected4
Amended rows0

Filing-only signals

Deterministic matches in the selected period

EBC transaction history

Filters apply within this company and selected period by default
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TickerInsiderRoleTypeSharesValueCodeSignals90d returnFiledTrans date

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Eastern Bankshares, Inc. Insider Activity FAQ

SEC Form 4 context

Who 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.