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Charles D. Baker

CIK 1554088 · last filed 2026-07-06

Charles D. Baker is a corporate insider who has filed 25 SEC Form 4 insider transactions across 2 companies since 2012. The most recent filing, for UNH, was dated Jul 6, 2026. Across all open-market trades the lifetime net is −$9.6K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $949.5K 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.

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Disclosed Exposure

$949.5K

Companies

2

Total Filings

25

Lifetime Open-Market Net

-$9.6K

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
UNH Director 2,396 $396.30 $949.5K -$9.6K 22 2026-07-06
ATHENAHEALTH INC (ATHN) Delisted Director — $9.59 — $0 2 2013-03-05

Recent Filings

25 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
2026-07-06 UNH Grant (A) +220 $0 EDGAR
2026-06-25 UNH Grant (A) +13 $0 EDGAR
2026-04-06 UNH Grant (A) +343 $0 EDGAR
2026-03-19 UNH Grant (A) +14 $0 EDGAR
2026-01-06 UNH Grant (A) +279 $0 EDGAR
2025-12-18 UNH Grant (A) +11 $0 EDGAR
2025-10-03 UNH Grant (A) +260 $0 EDGAR
2025-09-25 UNH Grant (A) +8 $0 EDGAR
2025-09-15 UNH Sell (S) −27 -$9.6K EDGAR
2025-09-11 UNH Notice (144) −27 -$9.4K EDGAR
Showing 1–10 of 25
Page 1 of 3
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.