Here is a detailed account of the most consequential insider trading activity made public on Wednesday, April 22, 2026, for U.S.-listed companies. The filings cover purchases and sales made by officers, directors and entities closely associated with company insiders. Each entry below is drawn from the disclosure documents and summarizes the reported transactions and the additional detail provided in those filings.
Top buys
GIP ATLAS Holdings Ltd - H2O AMERICA (HTO)
GIP ATLAS Holdings Ltd, identified as a 10% owner of H2O AMERICA (ticker: HTO), reported the acquisition of 50,385 shares of H2O AMERICA common stock. The purchases were executed on April 10, 2026, at a per-share price of $59.0636, for a total outlay of $2,975,919. The filing, submitted April 22, 2026, notes that following the transaction GIP ATLAS directly holds 4,582,469 shares of H2O AMERICA common stock. At the time of the disclosure HTO was trading near its 52-week high of $60.68 and had risen 22% year-to-date. The filing also cites InvestingPro analysis that the stock currently appears overvalued relative to its Fair Value.
Alessandro Zamboni - Nuburu, Inc. (BURU)
Alessandro Zamboni, who serves as Co-Chief Executive Officer and Director of Nuburu, Inc. (NASDAQ: BURU), reported a substantial indirect acquisition tied to late 2025 activity and later adjusted for a reverse stock split. On December 31, 2025, an entity controlled by Mr. Zamboni, Vanguard Holdings S.r.l., acquired 4,332,525 shares of Nuburu common stock at a price of $0.3453 per share, resulting in a stated value of $1,496,020. The filing specifies that these shares were issued in connection with the conversion of two convertible promissory notes with principal amounts of $545,000 and $900,000 respectively, plus outstanding interest. The conversion price reflected a 33.33% discount to the lowest daily volume-weighted average price during the five days prior to the conversion date. The disclosure treats this as an indirect acquisition and notes adjustments tied to a subsequent reverse stock split.
Hill Elliott - NIKE, Inc. (NKE)
Hill Elliott, President and Chief Executive Officer of NIKE, Inc. (NYSE: NKE), purchased 23,660.235 shares of the company’s Class B Common Stock on April 13, 2026, at a weighted average price of $42.27 per share. The total cost of the acquisition was $1,000,118, and the individual transaction prices fell in a narrow band from $42.265 to $42.300. The filing notes that the weighted average price is close to NIKE’s 52-week low of $42.09. At the time of the filing the stock was trading around $45.68 and had declined 33% over the prior six months. InvestingPro analysis cited in the disclosure indicates that NIKE appears undervalued at current levels based on Fair Value calculations. Following this purchase Mr. Elliott directly holds 265,247.235 shares of NIKE common stock. The filing amends an earlier submission to clarify the weighted average price of the transaction.
Richard Htwe - Badger Meter Inc. (BMI)
Richard Htwe, Vice President - Global Operations at Badger Meter Inc. (BMI), acquired 1,700 shares of the company’s common stock on April 21, 2026. The purchase was executed at $116.13 per share for a total of $197,421. The filing notes Badger Meter’s stock was trading near its 52-week low of $112.09 and that the share price had declined 41.5% over the past year. According to InvestingPro analysis referenced in the disclosure, Badger Meter appears undervalued and is listed on the platform’s Most Undervalued list. After this transaction Mr. Htwe directly owns 7,603 shares of Badger Meter common stock.
Christina M. Tarantino - Badger Meter Inc. (BMI)
Christina M. Tarantino, Vice President and Controller at Badger Meter, purchased 870 shares of the company’s common stock on April 21, 2026, for a total of $99,006. The shares were acquired at $113.80 each, a level just above the stock’s 52-week low of $112.09. The filing observes that the share price had fallen 23% over the previous week and 33% over six months.
Top sells
Brian M. Venturo - CoreWeave, Inc. (CRWV)
Brian M. Venturo, Chief Strategy Officer at CoreWeave, Inc. (NASDAQ: CRWV), reported sales of Class A Common Stock amounting to approximately $130.4 million executed on April 20, 2026. The disposals occurred at prices between $111.2589 and $117.8849 per share and were made pursuant to a pre-arranged Rule 10b5-1 trading plan that Mr. Venturo adopted on November 13, 2025. The filings indicate the stock has risen sharply over the past year - up 194% - and was trading at $122.54 at the time of reporting, a price above the levels at which Mr. Venturo sold. The disclosure also states CoreWeave carries a market capitalization of $61.59 billion and that InvestingPro analysis deems the shares slightly overvalued relative to Fair Value. The reported sales involved two entities indirectly tied to Mr. Venturo; West Clay Capital LLC, where he serves as managing member, sold a total of 899,000 shares of Class A Common Stock in multiple transactions at prices ranging from $110.80 to $118.05 per share.
Jayshree Ullal - Arista Networks, Inc. (ANET)
Jayshree Ullal, Chief Executive Officer and Chairperson of Arista Networks, Inc. (NASDAQ: ANET), disclosed the sale of 306,139 shares of Arista common stock on April 20, 2026, generating proceeds of approximately $51,220,728. The transactions were executed at prices between $167.00 and $167.82 per share. The filing notes Arista was trading near a 52-week high of $178.48 and had returned 159% over the past year. The company’s market capitalization at the time of reporting was $223.8 billion with a price-to-earnings ratio of 64.25. InvestingPro’s valuation analysis, cited in the filing, places Arista among firms classified as overvalued relative to Fair Value, and the stock appears on the platform’s Most Overvalued list. Ms. Ullal’s sales were conducted under Rule 10b5-1 trading plans adopted on November 14, 2025, and executed indirectly through multiple trusts. The filing breaks out the trust sales as 45,920 shares from a trust for the benefit of one child, another 45,920 shares from a trust for a second child, and 214,299 shares from a family trust. Ms. Ullal is identified as trustee or co-trustee for those trusts, sharing voting and investment control, but disclaims beneficial ownership of shares held in trust for her children, nephew and niece.
Magnetar-associated entities - CoreWeave, Inc. (CRWV)
Separate disclosures identify entities connected to Magnetar as reporting the sale of CoreWeave Class A Common Stock on consecutive days. On April 21, 2026, reporting entities identified as 10% owners of CoreWeave sold a combined 323,452 shares of Class A Common Stock at prices between $118.00 and $118.74 per share, for an aggregate of about $38.25 million. The disclosure specifies a weighted average sale price of $118.26. On April 20, 2026, investment entities including Magnetar Financial LLC, Magnetar Capital Partners LP, and Supernova Management LLC reported the disposition of 324,835 shares of CoreWeave Class A Common Stock for about $37.5 million, at a weighted average price of $117.33 per share with individual prices ranging from $117.07 to $117.45. Together with other reported disposals, these filings add to the wave of CoreWeave selling activity disclosed in the same reporting window. InvestingPro analysis in the filings suggests CoreWeave appears overvalued relative to Fair Value and provides subscribers with additional ProTips on valuation and profitability concerns for the roughly $61.6 billion company.
Brannin McBee - CoreWeave, Inc. (CRWV)
Brannin McBee, Chief Development Officer at CoreWeave, disclosed the sale of 287,500 shares of Class A Common Stock on April 20, 2026, totaling approximately $33.3 million. The transactions were executed under a Rule 10b5-1 trading plan adopted on November 17, 2025, and were completed at prices ranging from $111.28 to $117.99 per share. The filing notes that the stock has since traded up to $122.54, equating to a 194% increase over the past year and a 71% gain year-to-date. Mr. McBee’s reporting indicates direct sales of 200,000 shares, sales of 33,330 shares held indirectly by his spouse, and the sale of 54,170 shares held by the Brannin J. McBee 2022 Irrevocable Trust; the trust lists his spouse and a minor child as beneficiaries, and his spouse serves as trustee.
Context and cautions included in the filings
The disclosures reiterate the standard caveat that insider transactions can reflect a range of motives. The filings and accompanying commentary emphasize that while insider purchases are sometimes interpreted as votes of confidence in a company’s prospects, and insider sales can prompt questions about outlook or signal portfolio rebalancing, such trades take place for many reasons. The filings advise that insider activity should be weighed together with other fundamental and technical information when assessing an investment.
What the filings reveal about markets and sectors
- Consumer discretionary - The NIKE purchase by the company’s president and CEO, executed near the stock’s 52-week low, is notable in the consumer apparel and retail sector.
- Industrial/Utilities - Two officers at Badger Meter purchased shares at prices close to the company’s 52-week low, flagged in the filings as potentially undervalued by InvestingPro’s metrics.
- Technology/Cloud compute infrastructure - Multiple large, pre-arranged sales of CoreWeave stock and a significant sale by Arista's CEO point to heavy liquidity events in the technology and networking space over the reported period.
Investors and observers reviewing these filings should note both the scale of the individual transactions reported and the regulatory frameworks under which several of the sales were executed, including multiple Rule 10b5-1 trading plans that specify the timing and pricing mechanics for planned sales.
Conclusion
The filings made public on April 22, 2026, paint a picture of mixed insider behavior across sectors: selective buying by executives at NIKE and Badger Meter alongside large, pre-arranged disposals from executives and affiliated investment entities at CoreWeave and Arista. The disclosures include valuation assessments provided by InvestingPro, with NIKE and Badger Meter characterized as appearing undervalued and CoreWeave and Arista described as appearing overvalued relative to Fair Value.
These insider reports provide raw transactional detail for market participants to consider but do not by themselves establish definitive signals about future stock performance. The filings underscore that insiders transact for a variety of reasons and that such activity should be integrated with broader analysis when forming investment conclusions.