← All cluster events

EBC — 3 insiders, all selling

Eastern Bankshares, Inc. · Financials · ISO week 2026-W36 (2026-09-01 → 2026-09-02)

WATCH − all sells · clu-9ac8111562ab · detected 2026-09-04

3Distinct insiders

4Transactions

−$1.3MTotal reported value

3Source filings

Members

Insider	Role	Txns	Reported value
Westermann Donald Michael	Chief Information Officer	2	$720k
Henry Kathleen Cloherty	Executive VP, General Counsel	1	$304k
Antonakes Steven Louis	Executive VP	1	$296k

Timeline

2026-09-01

− Westermann Donald Michael Chief Information Officer S 10,407 sh @ $21.77 = $227k 0001193125-26-380203
− Westermann Donald Michael Chief Information Officer S 23,005 sh @ $21.43 = $493k 0001193125-26-380203
− Antonakes Steven Louis Executive VP S 13,500 sh @ $21.95 = $296k 0001193125-26-380208

2026-09-02

− Henry Kathleen Cloherty Executive VP, General Counsel S 14,000 sh @ $21.68 = $304k 0001193125-26-381910

Source filings (SEC EDGAR)

Known data limitations

Form 4 lag: insiders have 2 business days to file after a trade (weekends and holidays extend this), and this site re-ingests once daily — a transaction can appear here roughly three business days after it happened.
13F lag: quarterly 13F-HR holdings cover the prior quarter-end and are due 45 days after it — every institutional position shown here is at least 45 days old by construction, often more.
CUSIP→ticker gaps: 13F positions are reported by CUSIP; some holdings cannot be matched to a current ticker (delistings, corporate actions, thin metadata) and appear without one or are omitted from ticker-level views.
EDGAR timing variability: institutions file at different hours and days within their windows; amended filings (4/A, 13F-HR/A) can restate earlier periods, so historical aggregates may change between batches.

Insider Atlas is a descriptive research site, not investment advice — see the methodology for the full provenance chain.