MarketPeel
Insider Trading Intelligence
Pricing
…
DW

David Michael Williams

MRK
EVP,CHIEF INFO&DIGITAL OFFICER · MERCK & CO., INC. · CIK 0001820958
FILING MIX · LIFETIME49%/51%
BUYS
28
SELLS
29
TOTAL VALUE
$10.00M
COMPANIES
1
ACTIVE SINCE
Feb 2021
HOLDINGS NOW
4,640
AVG SELL PX
$96.15
TRADE KIND
SHOWING 57 / 57
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
5 backtested trades · 8 horizons · 6 pending
Forward-return performance of every backtestable P/S trade by David Michael Williams, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d5+60.00%+1.38%-0.27%+1.65%+0.86%—
14d5+20.00%+3.82%-1.43%+5.25%+0.69%—
30d5+60.00%+4.61%-0.80%+5.41%-2.17%—
60d5+80.00%+3.82%-0.63%+4.45%+2.37%—
90d5+60.00%+2.11%+4.07%-1.96%-9.63%—
180d5(1 pending)+75.00%+2.14%+4.40%-2.26%-12.11%—
1y5(2 pending)+33.33%+9.01%+19.66%-10.66%-11.31%—
2y5(3 pending)+100.00%-13.83%+40.26%-54.09%-54.09%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
MRK · 4,640 shares · as of May 5, 2026
010,36120,72331,08441,44520222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 28 buys / 29 sellsCOVERAGE · 22 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
13,582——13,582May 5, 2026May 7, 2026 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
4,640——4,640May 5, 2026May 7, 2026 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
1,377——2,755Apr 29, 2026May 1, 2026 ↗View →
MRK
MERCK & CO., INC.
PURCHASE
EVP,Chief Info&Digital Officer
1,377$110.03$151.5K32,395.037Apr 29, 2026May 1, 2026 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
679$110.03$74.7K31,716.037Apr 29, 2026May 1, 2026 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
5,000——4,600Feb 6, 2026Feb 6, 2026 ↗View →
MRK
MERCK & CO., INC.
PURCHASE
EVP,Chief Info&Digital Officer
5,000$77.62$388.1K35,837.743Feb 6, 2026Feb 6, 2026 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
5,000$121.91$609.5K30,837.743Feb 6, 2026Feb 6, 2026 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
6,112$107.40$656.4K30,837.743Jan 26, 2026Jan 28, 2026 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
8,614$83.59$720.0K24,578.031Nov 3, 2025Nov 4, 2025 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
17,119——0Aug 4, 2025Aug 5, 2025 ↗View →
MRK
MERCK & CO., INC.
PURCHASE
EVP,Chief Info&Digital Officer
17,119$79.29$1.36M41,445.467Aug 4, 2025Aug 5, 2025 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
8,432$79.29$668.6K33,013.467Aug 4, 2025Aug 5, 2025 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
18,807——18,807Apr 29, 2025May 1, 2025 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
4,132——4,132Apr 29, 2025May 1, 2025 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
6,000$85.34$512.1K24,123.316Feb 13, 2025Feb 13, 2025 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
10,246$97.94$1.00M30,123.316Jan 27, 2025Jan 29, 2025 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
16,406——16,406Apr 30, 2024May 2, 2024 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
1,451$127.57$185.1K19,811.667Feb 7, 2024Feb 8, 2024 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
10,196$119.43$1.22M21,262.667Jan 22, 2024Jan 24, 2024 ↗View →
MRK
MERCK & CO., INC.
PURCHASE
EVP,Chief Info&Digital Officer
6,035$56.04$338.2K18,567.96May 2, 2023May 3, 2023 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
7,509$116.82$877.2K11,058.96May 2, 2023May 3, 2023 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
6,035——0May 2, 2023May 3, 2023 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
19,364——19,364May 2, 2023May 4, 2023 ↗View →
MRK
MERCK & CO., INC.
PURCHASE
EVP,Chief Info&Digital Officer
577$115.47$66.6K12,730.96May 1, 2023May 3, 2023 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
198$115.47$22.9K12,532.96May 1, 2023May 3, 2023 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
577——0May 1, 2023May 3, 2023 ↗View →
MRK
MERCK & CO., INC.
PURCHASE
EVP,Chief Info&Digital Officer
1,205$106.72$128.6K12,504.892Feb 10, 2023Feb 13, 2023 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
413$106.72$44.1K12,091.892Feb 10, 2023Feb 13, 2023 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
1,205——0Feb 10, 2023Feb 13, 2023 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
1,745$109.88$191.7K11,007.757Jan 23, 2023Jan 25, 2023 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
17,119——17,119Aug 3, 2022Aug 4, 2022 ↗View →
MRK
MERCK & CO., INC.
PURCHASE
EVP,Chief Info&Digital Officer
427$87.65$37.4K9,409.757May 3, 2022May 4, 2022 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
147$87.65$12.9K9,262.757May 3, 2022May 4, 2022 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
427——0May 3, 2022May 4, 2022 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
21,359——21,359May 3, 2022May 5, 2022 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
198$88.69$17.6K8,982.757May 1, 2022May 3, 2022 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
577——577May 1, 2022May 3, 2022 ↗View →
MRK
MERCK & CO., INC.
PURCHASE
EVP,Chief Info&Digital Officer
577$88.69$51.2K9,180.757May 1, 2022May 3, 2022 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
1,660$73.51$122.0K8,603.757Feb 24, 2022Feb 28, 2022 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
1,202——1,205Feb 10, 2022Feb 14, 2022 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
477$76.53$36.5K6,943.757Feb 10, 2022Feb 14, 2022 ↗View →
MRK
MERCK & CO., INC.
PURCHASE
EVP,Chief Info&Digital Officer
1,202$76.53$92.0K7,420.757Feb 10, 2022Feb 14, 2022 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
143$75.98$10.9K5,518.757May 4, 2021May 6, 2021 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
417——0May 4, 2021May 6, 2021 ↗View →
MRK
MERCK & CO., INC.
PURCHASE
EVP,Chief Info&Digital Officer
417$75.98$31.7K5,661.757May 4, 2021May 6, 2021 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
33,673——33,673May 4, 2021May 6, 2021 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
412——414May 3, 2021May 4, 2021 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
142$74.50$10.6K5,244.757May 3, 2021May 4, 2021 ↗View →
MRK
MERCK & CO., INC.
PURCHASE
EVP,Chief Info&Digital Officer
412$74.50$30.7K5,386.757May 3, 2021May 4, 2021 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
192$74.50$14.3K4,974.757May 1, 2021May 4, 2021 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
560——1,120May 1, 2021May 4, 2021 ↗View →
MRK
MERCK & CO., INC.
PURCHASE
EVP,Chief Info&Digital Officer
560$74.50$41.7K5,166.757May 1, 2021May 4, 2021 ↗View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
2,090$72.62$151.8K4,582.883Feb 26, 2021Mar 2, 2021 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
467$75.04$35.0K3,192.883Feb 10, 2021Feb 11, 2022 ↗View →
MRK
MERCK & CO., INC.
SALE
EVP,Chief Info&Digital Officer
1,167——2,335Feb 10, 2021Feb 11, 2022 ↗View →
MRK
MERCK & CO., INC.
PURCHASE
EVP,Chief Info&Digital Officer
1,167$75.04$87.6K3,659.883Feb 10, 2021Feb 11, 2022 ↗View →
Other insiders · MRK
Loading peer insiders…
About this filer
CIK 0001820958
ROLE
EVP,Chief Info&Digital Officer
PRIMARY
MRK
COMPANIES
1
ACTIVE SINCE
Feb 2021
MARKETPEEL · /INSIDER/0001820958DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

The morning brief, before the bell.

One short email. Insider buys, congressional trades, and plain-English analysis.

Feedback