This article highlights the most significant insider buying and selling activities disclosed on Monday, December 22, 2025, for US-listed companies.
Top Insider Buys
Coliseum Capital made substantial investments in MasterCraft Boat Holdings, Inc. (NASDAQ:MCFT), purchasing shares worth $2.65 million across three separate transactions. The buying activity spanned from December 18 to December 22, 2025, with 33,807 shares acquired at an average price of $19.34 on December 18, 76,000 shares at $19.79 on December 19, and 25,000 shares at $19.66 on December 22. The purchases were executed at prices ranging from $19.17 to $19.99 across the three-day period.
Suvretta Capital Management, LLC reported purchasing shares of Benitec Biopharma Inc. (NASDAQ:BNTC) between December 18 and December 22, 2025. The transactions, totaling $538,972, were executed at prices ranging from $11.24 to $12.08. Specifically, Averill Master Fund, Ltd. acquired 8,700 shares on December 18, 13,950 shares on December 19, and 16,650 shares on December 22, while Averill Madison Master Fund, Ltd. purchased 1,515 shares on December 18, 2,434 shares on December 19, and 2,892 shares on December 22.
SeaStar Medical Holding Corp (NASDAQ:ICU) Director Jennifer A Baird acquired 4,200 shares of common stock on December 19, 2025, at a price of $0.2351 per share, for a total value of $987. Following this transaction, Baird directly owns 36,200 shares of the company. This purchase comes as ICU shares have declined 87% over the past year and 18% in the last week alone, with the stock trading near its 52-week low of $0.23. Despite the company’s weak overall financial health score, ICU maintains a strong liquidity position with a current ratio of 3.66.
Andreessen Horowitz Funds, which hold beneficial ownership of more than 10% of Navan Inc. (NASDAQ:NAVN), reported purchasing a total of 702,395 shares of Class A Common Stock worth $9.3 million. The purchases were executed between December 17 and December 19, 2025, at weighted average prices ranging from $12.65 to $14.70. Specifically, 347,600 shares were acquired on December 17 at an average price of $12.65, 103,960 shares on December 18 at $13.61, and 240,835 shares on December 19 at $14.70. The stock currently trades at $15.11, above the purchase price range, despite falling 24.45% over the past six months.
Top Insider Sells
Precigen, Inc. (NASDAQ:PGEN) Director Randal J. Kirk reported selling 1,900,000 shares of common stock on December 22, 2025. The sales were executed at a price of $4.18 per share, totaling $7,942,150. The transactions involved multiple entities through which Kirk holds indirect ownership, including various LLCs and trusts. This sale comes as Precigen shares have surged 487% over the past year, with the stock currently trading at $4.38, slightly above Kirk’s sale price.
NVIDIA CORP (NASDAQ:NVDA) Director Mark A. Stevens sold 222,500 shares of common stock on December 19, 2025, for approximately $40 million. The shares were sold at a weighted average price of $180.168, with individual sales prices ranging from $179.960 to $180.505. Stevens also gifted 258,650 shares of NVIDIA common stock on December 18, 2025, without consideration. NVIDIA shares currently trade at $183.62, with the company valued at $4.46 trillion.
Snowflake Inc (NASDAQ:SNOW) Director Frank Slootman sold a total of 200,390 shares of common stock on December 18, 2025, for approximately $44.3 million. The sales were executed in multiple transactions with prices ranging from $217.43 to $223.214. The transactions included 3,744 shares at $217.43, 7,300 shares at $219.858, 31,710 shares at $220.505, 44,582 shares at $221.468, 107,574 shares at $222.595, and 5,090 shares at $223.214. Snowflake shares are currently trading at $226.84, up about 2% from the sale prices.
Broadcom (NASDAQ:AVGO) CEO Tan Hock E sold 130,000 shares of common stock on December 18, 2025, at a price of $326.02, for a total transaction value of $42,382,600. Following the transaction, Tan directly owns 482,836 shares and indirectly owns 595,638 shares by trust. The stock is currently trading at $341.38, approximately 4.7% higher than the transaction price. Broadcom, with a market capitalization of $1.62 trillion, has raised its dividend for 16 consecutive years and maintains an impressive 77.3% gross profit margin.
ATI Inc (NYSE:ATI) Executive Chairman Robert S. Wetherbee sold a total of 53,862 shares of common stock on December 18, 2025, for approximately $6.5 million. The sales occurred at weighted average prices ranging from $108.86 to $110.34 per share. Specifically, 6,507 shares were sold at an average price of $108.86, with individual prices ranging from $108.18 to $109.17, and an additional 47,355 shares were sold at an average price of $109.57, in a price range between $109.18 and $110.17.
Why Monitor Insider Transactions
Tracking insider buying and selling activities provides investors with valuable insights into how company executives and major shareholders view their own stock’s prospects. While insider buying often signals confidence in the company’s future performance, selling may occur for various reasons unrelated to company outlook, such as personal financial planning or diversification. Investors should consider insider transactions as just one factor in their investment decision-making process, alongside fundamental analysis, industry trends, and broader market conditions.
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