David Michael Williams

CIK 1820958 · EVP,Chief Info&Digital Officer · last filed 2026-08-07

David Michael Williams is an EVP,Chief Info&Digital Officer who has filed 34 SEC Form 4 insider transactions across 1 company since 2021. The most recent filing, for MRK, was dated Aug 7, 2026. Across all open-market trades the lifetime net is −$16.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $4.8M across reported positions. 34 SEC filings were submitted jointly with Merck & Co., Inc.

"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.

Disclosed Exposure

$4.77M

Companies

1

Total Filings

34

Lifetime Open-Market Net

-$16.51M

Filer Profile

Reported Address

MERCK & CO., INC.
126 EAST LINCOLN AVENUE
RAHWAY, NJ 07065

Related Filers

Merck & Co., Inc. — 34 joint filings, latest 2026-08-07

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
MRK	EVP,Chief Info&Digital Officer	31,716	$150.33	$4.77M	-$16.51M	28	2026-08-07

Recent Filings

34 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
2026-08-07	MRK	Mixed	—	-$2.87M	EDGAR
2026-08-07	MRK	Mixed	—	-$2.87M	EDGAR
2026-08-05	MRK	Notice (144)	−52,847	-$6.81M	EDGAR
2026-05-07	MRK	Grant (A)	—	$0	EDGAR
2026-05-01	MRK	Mixed	+698	$76.8K	EDGAR
2026-02-06	MRK	Notice (144)	−5,000	-$609.5K	EDGAR
2026-02-06	MRK	Mixed	—	-$221.4K	EDGAR
2026-01-28	MRK	Grant (A)	+6,112	$656.4K	EDGAR
2025-11-04	MRK	Sell (S)	−8,614	-$720.0K	EDGAR
2025-11-03	MRK	Notice (144)	−8,614	-$720.0K	EDGAR

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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.