Home

Charles Cherington

CIK 1448698 · last filed 2026-02-17

Charles Cherington is a corporate insider who has filed 20 SEC Form 4 insider transactions across 4 companies since 2021. The most recent filing shows the insider bought $2.0M of ERNAW on Feb 17, 2026. Across all open-market trades the lifetime net is +$1.7M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $3.3M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

Loading insider history…
Disclosed Exposure

$3.32M

Companies

4

Total Filings

20

Lifetime Open-Market Net

$1.72M

Filer Profile

Reported Address
ONE BOW STREET
CAMBRIDGE, MA 02138
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
ERNAW 10%+ Owner 6,779,440 $0.04 $244.7K $2.00M 1 2026-02-17
ERNA 10%+ Owner 111,093 $4.17 $462.7K $3.47M 7 2025-06-11
Comera Life Sciences Holdings, Inc. (CMRAW) Delisted 10%+ Owner 7,082,411 $0.02 $136.7K $2.54M 8 2023-09-11
BTX Director 294,710 $8.87 $2.61M -$6.30M 3 2022-08-03

Recent Filings

20 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-02-17 ERNAW Buy (P) +4,000,000 $2.00M EDGAR
2025-06-11 ERNA Buy (P) +21,241,163 $2.22M EDGAR
2025-05-07 ERNA Mixed +13,252,112 $0 EDGAR
2025-04-04 ERNA Buy (P) +3,768,397 $394.2K EDGAR
2024-11-05 ERNA Mixed +16,071,658 $1.41M EDGAR
2024-01-03 — Buy (P) — $0
2023-12-20 ERNA Mixed — $0 EDGAR
2023-09-11 Comera Life Sciences Holdings, Inc. (CMRAW) Delisted Buy (P) +2,053,789 $1.05M EDGAR
2023-08-25 Comera Life Sciences Holdings, Inc. (CMRAW) Delisted Buy (P) +880,195 $450.0K EDGAR
2023-08-25 ERNA Buy (P) — $0 EDGAR
Showing 1–10 of 20
Page 1 of 2
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.