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Whale Atlas News · Insider sales

Biggest insider sales, week of Oct 12–18, 2026: Medline (MDLN) tops the list at $274.8M

Insiders reported 1,077 sales of common stock across 235 companies in SEC Form 4 filings. These are the five U.S. companies with the most insider selling by dollar value; 0% of that value was sold under pre-arranged 10b5-1 trading plans.

Week of Oct 12–18, 2026·Published Oct 19, 2026·Automated report from SEC Form 4 filings
$850.34Msold at the five companies below
1,077sales reported this week
235companies with insider selling
  1. #1

    Medline (MDLN)

    $274.77M

    Industry: Surgical & Medical Instruments & Apparatus. SEC ↗

    One insider sold 7,816,987 shares in 1 transaction at an average of $35.15 a share.

    • GIC Private Ltd; GIC Special Investments Pte Ltd; Hux Investment Pte. Ltd., 10% owner: sold 7,816,987 shares at $35.15 ($274.77M) on Oct 8, 2026. Filed Oct 13, 2026. View Form 4 on SEC.gov ↗
    All insider trades in MDLN →
  2. #2

    Elastic (ESTC)

    $188.3M

    Elastic is a Dutch-American software company that provides a platform for enterprise search, observability, and cybersecurity. Wikipedia (CC BY-SA 4.0) ↗

    One insider sold 2,000,000 shares in 1 transaction at an average of $94.15 a share.

    • Schuurman Steven, Director: sold 2,000,000 shares at $94.15 ($188.3M) on Oct 12, 2026. Filed Oct 13, 2026. View Form 4 on SEC.gov ↗
    All insider trades in ESTC →
  3. #3

    Talos Energy (TALO)

    $158.71M

    Industry: Crude Petroleum & Natural Gas. SEC ↗

    One insider sold 9,205,446 shares in 5 transactions at an average of $17.24 a share.

    • Control Empresarial de Capitales S.A. de C.V., 10% owner: sold 2,700,000 shares at $17.51 ($47.28M) on Oct 13, 2026. Filed Oct 15, 2026. View Form 4 on SEC.gov ↗
    • Control Empresarial de Capitales S.A. de C.V., 10% owner: sold 2,310,000 shares at $17.03 ($39.34M) on Oct 8, 2026. Filed Oct 13, 2026. View Form 4 on SEC.gov ↗
    • Control Empresarial de Capitales S.A. de C.V., 10% owner: sold 2,200,000 shares at $17.25 ($37.95M) on Oct 12, 2026. Filed Oct 13, 2026. View Form 4 on SEC.gov ↗
    All insider trades in TALO →2 smaller transactions not listed
  4. #4

    Kinetik Holdings (KNTK)

    $121.26M

    Industry: Natural Gas Transmission. SEC ↗

    One insider sold 2,216,019 shares in 5 transactions at an average of $54.72 a share.

    • ISQ Global Fund II GP LLC; I Squared Capital, LLC; ISQ Holdings, LLC; Wahba Sadek; Bhandari Gautam, 10% owner: sold 2,000,000 shares at $54.77 ($109.54M) on Oct 13, 2026. Filed Oct 15, 2026. View Form 4 on SEC.gov ↗
    • ISQ Global Fund II GP LLC; I Squared Capital, LLC; ISQ Holdings, LLC; Wahba Sadek; Bhandari Gautam, 10% owner: sold 119,203 shares at $54.29 ($6.47M) on Oct 8, 2026. Filed Oct 13, 2026. View Form 4 on SEC.gov ↗
    • ISQ Global Fund II GP LLC; I Squared Capital, LLC; ISQ Holdings, LLC; Wahba Sadek; Bhandari Gautam, 10% owner: sold 38,377 shares at $54.19 ($2.08M) on Oct 12, 2026. Filed Oct 13, 2026. View Form 4 on SEC.gov ↗
    All insider trades in KNTK →2 smaller transactions not listed
  5. #5

    International Seaways (INSW)

    $107.31M

    Industry: Water Transportation. SEC ↗

    One insider sold 1,106,190 shares in 14 transactions at an average of $97.01 a share.

    • Famatown Finance Ltd; GREENWICH HOLDINGS LTD.; C.K. Ltd, 10% owner: sold 156,924 shares at $81.28 ($12.75M) on Apr 30, 2026. Filed Oct 16, 2026. View Form 4 on SEC.gov ↗
    • Famatown Finance Ltd; GREENWICH HOLDINGS LTD.; C.K. Ltd, 10% owner: sold 150,000 shares at $82.16 ($12.32M) on May 1, 2026. Filed Oct 16, 2026. View Form 4 on SEC.gov ↗
    • Famatown Finance Ltd; GREENWICH HOLDINGS LTD.; C.K. Ltd, 10% owner: sold 135,000 shares at $87.48 ($11.81M) on May 6, 2026. Filed Oct 16, 2026. View Form 4 on SEC.gov ↗
    All insider trades in INSW →11 smaller transactions not listed

How this report is made

This report is compiled automatically from SEC Form 4 filings received during the week shown. Companies are ranked by the total dollar value of insider sales (transaction code S, open-market or private sale). “Insiders” include officers, directors and owners of more than 10% of a company, which can be investment funds. Only common stock is counted: preferred shares, units and derivatives are left out, as are filings that fail our data checks. When a fund and the insider who controls it both report the same trade, it is counted once. Only U.S.-based companies are ranked, because insiders of foreign companies sometimes report prices in their local currency.

Every figure comes from the original filing, which is linked in each entry; the filing is the authoritative record. This is information, not investment advice. See the methodology, disclaimer and corrections policy.

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