Company_Context
Basic Materials
Pharmaceutical Preparations
Source: SEC SIC
MARKET_TICKER: MRK
MERCK & CO INCInsider Trading & SEC Form 4 Analysis
Institutional analysis of internal capital flows based on SEC Form 4 filings.
Open-Market Signal
BEARISH
SOURCE: EDGAR_SYSTEMSTATUS: VERIFIED
Signal_Window
Headline metrics use exact calendar-day windows.
17 directional transactions in 90D
Code P purchases and code S sales are measured from 2026.05.30 — 2026.08.27.
Net_Flow_90D
-$30.0M
Open-market buys minus salesLatest_Form_4
2026.08.13
Latest available filingActive_Insiders_90D
8
Reporting entities in windowTop_Buyer_90D
No 90D buyer
No open-market buys in 90DTop_Seller_90D
Zachary Jennifer
$10.7MAutomated_Intelligence_Report :: MRK
Analysis of eligible SEC Form 4 activity for MRK indicates a bearish 90-day signal. The selected window contains transactions from 8 distinct reporting insiders, with aggregate nominal activity of $41.54M.
Open-market purchases minus open-market sales produce a negative net flow of $29.98M. Open-market executions represent the majority of measured nominal activity in this window, making the directional flow more representative of voluntary trading activity.
The largest open-market sale in the selected window was attributed to Zachary Jennifer (EVP, General Counsel). Form 4 activity provides useful ownership context, but it should not be treated as a standalone prediction of future price performance.
Enriched_Research_Context
More context behind the filing
These indicators use normalized SEC roles, issuer metadata, cluster detection and post-filing market prices already calculated by the data pipeline.
Cluster_Activity
0
Clustered open-market purchase records in the recent filing sample.
No coordinated buying cluster detected
Post_Filing_Performance
Live Market Chart :: MRK
Analyze MRK with advanced technical indicators.
View on TradingView (Get $15 Off)Recent Insider Flow :: MRK
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Recent_Filing_History
Inspect the underlying SEC transactions
This table shows recent filing history and is not restricted by the selected 90D headline signal window.
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Automated_Queries :: Frequently Asked Questions
>Who is currently buying MRK stock?
No eligible open-market purchases were reported for MRK during the last 90 calendar days.
>Are MRK insiders selling their shares?
During the last 90 calendar days, eligible open-market sales total $29.98M. Zachary Jennifer recorded the largest aggregate selling volume.
>What is the overall insider sentiment for MRK?
The 90-day open-market signal is BEARISH, with net flow of $29.98M across 8 reporting insiders in the selected window.
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