Here’s a roundup of the most significant insider trading activity disclosed on Thursday across U.S. public markets.

Top insider buys

saw substantial insider buying as David P. Bonita, a director and ten percent owner, acquired common stock totaling approximately $12.5 million on April 21, 2026. The transactions involved the purchase of 2,815,315 shares at $4.44 per share, just above the current trading price of $4.41. These purchases occurred as part of an underwritten public offering and involved common stock acquired indirectly through affiliated entities. Specifically, 1,689,189 shares are held of record by OrbiMed Private Investments VI, LP, and 1,126,126 shares are held of record by OrbiMed Genesis Master Fund, L.P. The timing of this insider purchase comes as the stock has delivered exceptional returns, surging nearly 400% over the past year and 193% in the last six months.

OrbiMed Advisors LLC and affiliated entities, including OrbiMed Capital GP VI LLC, ORBIMED CAPITAL LLC, and OrbiMed Genesis GP LLC, also increased their stake in Prelude Therapeutics Inc (NASDAQ:PRLD) through the same stock purchases. On April 21, 2026, these entities acquired a total of 2,815,315 shares of common stock, amounting to approximately $12,499,998. The shares were purchased at a price of $4.44 each, just above the current stock price of $4.41. The investment comes amid remarkable momentum for Prelude, with shares delivering a 398% return over the past year and revenue growth of 73%. The acquisitions were made in an underwritten public offering, with 1,689,189 shares acquired by OrbiMed Private Investments VI, LP and 1,126,126 shares acquired by OrbiMed Genesis Master Fund, L.P.

attracted buying interest from two directors this week. Todd A. Sprang purchased 450 shares on April 22, 2026, at a price of $138.96 per share, for a total value of $62,532. Following this transaction, Mr. Sprang directly holds 2,015 shares of Bank First Corp common stock. The stock has since climbed to $141.83, delivering a 31% return over the past year. The insider purchase comes as the $1.58 billion bank trades at a P/E ratio of 19.68, and the company has maintained dividend payments for 17 consecutive years, currently yielding 1.58%.

Bank First Corp (NASDAQ:BFC) also saw director Michael S Stayer-Suprick purchase 225 shares of the company’s common stock on April 21, 2026. The transaction totaled $31,509, with shares acquired at a price of $140.04 per share. Following this purchase, his direct ownership in Bank First Corp stands at 4,597 shares of common stock. The transaction was reported in a Form 4 filing with the Securities and Exchange Commission on April 23, 2026. The insider purchase comes as BFC shares trade at $141.83, with the stock delivering a strong 31% return over the past year.

Chief Financial Officer Erik D. Hoag acquired 1,000 shares of the company’s common stock on April 23, 2026. The transaction, valued at $65,670, saw shares purchased at a price of $65.67 each. Following this purchase, Mr. Hoag directly holds 1,000 shares of Travel & Leisure Co. common stock. Additionally, he holds 110,336 previously reported restricted stock units.

Top insider sells

experienced the largest insider sale by dollar value as Fluor Corp, which serves as a director, disposed of 13,500,000 shares of the nuclear energy company on April 21, 2026. The shares were sold at a price of $11.8092 each, amounting to a total value of approximately $159,424,200. This sale was made pursuant to a previously disclosed agreement. The stock has since risen to $13.57, though it remains down 64% over the past six months.

CoreWeave, Inc. (CRWV) CEO and President Michael N. Intrator reported sales of company stock totaling approximately $35.8 million on April 21, 2026. The transactions involved the disposal of 297,693 shares of Class A Common Stock, with prices ranging from $114.709 to $120.328 per share. The sales were executed both directly by Mr. Intrator (190,000 shares) and indirectly through Omnadora Capital LLC (107,693 shares). These transactions were conducted pursuant to a Rule 10b5-1 trading plan adopted by Mr. Intrator on November 20, 2025. Following these sales, Mr. Intrator directly holds 5,066,501 shares of Class A Common Stock, while Omnadora Capital LLC now holds 0 shares. The sale comes as CoreWeave shares have surged 181% over the past year, though the stock currently trades at $117.42.

CEO and Chairperson Jayshree Ullal disposed of common stock totaling approximately $15.8 million on April 21, 2026. The sales were executed through multiple transactions at prices ranging from $167.6403 to $170.5066 per share. The transactions involved a total of 93,861 shares of Arista Networks common stock, all sold indirectly through various trusts. These sales were conducted under Rule 10b5-1 trading plans, which were established on November 14, 2025. The insider sale comes as Arista Networks stock trades near its 52-week high of $178.48, with shares delivering a remarkable 144% return over the past year.

Everpure, Inc. (NASDAQ:P) Chief Visionary Officer John Colgrove sold Class A Common Stock totaling $12,021,056 through a series of transactions between April 21 and April 23, 2026. The shares were sold at prices ranging from $70.04 to $71.08 per share. The sales were executed under a Rule 10b5-1 trading plan, which Mr. Colgrove adopted on behalf of the applicable trusts on January 8, 2026. The shares were held by The RWC Irrevocable Trust, The EEC Irrevocable Trust, and VCF Trust. Following these transactions, Mr. Colgrove continues to hold a significant number of shares both directly and indirectly through various trusts. The stock currently trades at $69.98, down 25% over the past six months, though it has gained nearly 64% over the past year.

Chairman and CEO Aikawa Yoshiyuki sold 3,100,000 shares of the company’s common stock for a total value of $9,369,750 on April 21, 2026. The shares were sold at a price of $3.0225 each as part of an underwritten public offering that closed on the same day. Following this direct disposition, Mr. Aikawa directly holds 79,304,460 shares of SBC common stock. The insider sale comes as SBC stock trades at $3.40, up slightly from the offering price, though shares have declined 24% over the past week.

Monitoring insider trading activity provides valuable insights into how company executives and major shareholders view their stock’s prospects. While insider purchases can signal confidence in a company’s future performance, sales don’t necessarily indicate pessimism, as executives may sell for various personal financial reasons. However, the size and timing of these transactions, especially when conducted by multiple insiders or involving significant dollar amounts, can offer important context for investors conducting their own research and due diligence.

This article was generated with the support of AI and reviewed by an editor. For more information see our T&C.