Rita A Karachun

CIK 1601572 · Sr. VP Fince-Global Controller · last filed 2026-06-09

"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

$6.91M

Companies

2

Total Filings

35

Lifetime Open-Market Net

-$12.91M

Filer Profile

Reported Address
2000 GALLOPING HILL ROAD
KENILWORTH, NJ 07033
Related Filers
Merck & Co., Inc. — 35 joint filings, latest 2024-02-14
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
CHRS Director 30,000 $1.42 $42.6K $0 3 2026-06-09
MRK Sr. VP Fince-Global Controller 45,709 $150.33 $6.87M -$12.91M 30 2023-05-05

Recent Filings · Page 2 of 4

35 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
2022-05-05 MRK Mixed +623 $54.3K EDGAR
2022-05-04 MRK Mixed +593 $52.0K EDGAR
2022-05-03 MRK Mixed +610 $54.1K EDGAR
2022-02-28 MRK Grant (A) +3,478 $255.7K EDGAR
2021-11-04 MRK Mixed -$2.21M EDGAR
2021-05-06 MRK Mixed +796 $60.5K EDGAR
2021-05-04 MRK Mixed +1,167 $86.9K EDGAR
2021-03-02 MRK Grant (A) +6,052 $439.5K EDGAR
2020-05-06 MRK Mixed +2,281 $175.8K EDGAR
2020-05-05 MRK Mixed +444 $34.5K EDGAR
Showing 1120 of 35
Page 2 of 4
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.