Merck & Co., Inc. (MRK) insider trading

{
  "status": "OK",
  "results": [
    {
      "tickers": [
        "MRK"
      ],
      "issuer_cik": "0000310158",
      "owner_cik": "0001722753",
      "accession_number": "0000310158-26-000223",
      "form_type": "4",
      "filing_date": "2026-08-13",
      "period_of_report": "2026-08-13",
      "issuer_name": "Merck & Co., Inc.",
      "issuer_trading_symbol": "MRK",
      "owner_name": "Guindo Chirfi",
      "is_officer": true,
      "officer_title": "EVP, Access, Policy & Comms",
      "security_type": "non_derivative",
      "record_type": "transaction",
      "security_title": "Common Stock",
      "transaction_timeliness": "O",
      "aff_10b5_one": false,
      "transaction_date": "2026-08-13",
      "transaction_code": "S",
      "equity_swap_involved": false,
      "transaction_shares": 10000,
      "transaction_price_per_share": 135,
      "transaction_acquired_disposed": "D",
      "shares_owned_following_transaction": 36613.127,
      "transaction_value": 1350000,
      "direct_or_indirect": "D"
    },
    {
      "tickers": [
        "MRK"
      ],
      "issuer_cik": "0000310158",
      "owner_cik": "0001737231",
      "accession_number": "0000310158-26-000221",
      "form_type": "4",
      "filing_date": "2026-08-13",
      "period_of_report": "2026-08-12",
      "issuer_name": "Merck & Co., Inc.",
      "issuer_trading_symbol": "MRK",
      "owner_name": "Zachary Jennifer",
      "is_officer": true,
      "officer_title": "EVP, General Counsel",
      "security_type": "non_derivative",
      "record_type": "transaction",
      "security_title": "Common Stock",
      "transaction_timeliness": "O",
      "aff_10b5_one": false,
      "transaction_date": "2026-08-12",
      "transaction_code": "S",
      "equity_swap_involved": false,
      "transaction_shares": 80315,
      "transaction_price_per_share": 133.4557,
      "transaction_acquired_disposed": "D",
      "shares_owned_following_transaction": 45509.254,
      "transaction_value": 10718494.545500001,
      "direct_or_indirect": "D",
      "footnotes": [
        {
          "id": "F1",
          "description": "The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $133.0300 to $133.5000, inclusive. The reporting person undertakes to provide to Merck & Co., Inc., any security holder of Merck & Co., Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above in this footnote."
        }
      ]
    }
  ]
}

// trimmed to 2 results

The response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.