Latest Schedule 13D activist filings

NASDAQ
A group of beneficial owners, including Karen Seaberg, has significantly reduced its holdings in MGP Ingredients, Inc. through open market sales and redemptions.
NASDAQ
SilverCape Investments Limited has submitted a non-binding proposal to acquire all outstanding shares of PetMed Express Inc. for $4.00 per share in cash, aiming to take the company private.
NASDAQ
Yunqi Capital, a 5.1% shareholder, reiterates its opposition to Alcon's revised $30.75 per share offer for STAAR Surgical, citing an undervalued company and a flawed go-shop process.
NASDAQ
Manchester Management and affiliated entities have increased their beneficial ownership in SANUWAVE Health, Inc. to 11.1% of common stock, reiterating an investment-focused approach.
NYSE
James D. Dondero and affiliated entities have significantly increased their beneficial ownership in Highland Opportunities & Income Fund through recent open market purchases.
NASDAQ
An amendment to Schedule 13D reports a change in MiCo IVD's management and confirms its 17.0% beneficial ownership in Trinity Biotech plc.
NASDAQ
Two Seas Capital LP and its affiliates have reduced their beneficial ownership in Indivior PLC to 5.7% through a series of open market transactions.
NASDAQ
KAOS Capital Ltd. and its CEO Adam Arviv have disclosed a 16.77% beneficial ownership stake in Psyence Biomedical Ltd., citing the company's securities as undervalued.
Superior Industries International Inc. has completed its merger, becoming a wholly-owned subsidiary of SUP Parent, leading to its deregistration from the SEC.
NASDAQ
John C. Malone exchanged 47,297 Series B Liberty Formula One Common Stock shares for Series C shares to maintain his voting power below 49%.
NYSE
Mat Ishbia and SFS Holding Corp. updated their Schedule 13D filing to reflect recent sales of UWM Holdings Class A Common Stock under a pre-arranged 10b5-1 trading plan.
NASDAQ
Castle Creek Capital Partners VII, LP has reduced its beneficial ownership in CF Bankshares Inc. to 6.1% after selling 67,918 shares for over $1.6 million.
NASDAQ
Strategic EP, LLC and Alexander Chase Deitch have filed an exit amendment to their Schedule 13D, reporting they no longer beneficially own more than five percent of Netcapital Inc.'s common stock.
NASDAQ
Hartree Partners, LP has disclosed an 8.7% beneficial ownership stake in Hudson Technologies Inc., citing an attractive investment opportunity.
Saray Capital's offer to acquire all outstanding shares of Paramount Group not already owned by its affiliates was rejected by the Board of Directors, citing an existing merger agreement.
NYSE
Saba Capital Management, L.P. has reduced its beneficial ownership in MFS High Income Municipal Trust to 4.97% through recent open market transactions.
NASDAQ
Magnetar Financial and affiliated entities have reduced their beneficial ownership in Cross Country Healthcare, Inc. to 4.98% after selling 183,678 shares.
NASDAQ
KKR entities have increased their beneficial ownership in Henry Schein to 15.2% through a new total return swap and extended their board representation and related commitments.
NASDAQ
Windsor Private Capital and its affiliates have reduced their beneficial ownership in Firefly Neuroscience, Inc. to 7.0% through recent share sales.
Jeffrey E. Eberwein exchanged preferred stock for 287,631 common shares, increasing his beneficial ownership in Star Equity Holdings to 27.1%.
NASDAQ
Peter R. Kellogg increased his beneficial ownership in Mercer International Inc. to 36.5% through recent stock purchases.
AMEX
Tether Holdings, S.A. de C.V. and its affiliates have increased their beneficial ownership in Metalla Royalty & Streaming Ltd. to 6.6% of outstanding common shares through recent open market purchases.
BML Investment Partners and Braden M. Leonard have fully divested their beneficial ownership in Adverum Biotechnologies, Inc. common stock.
NYSE
NPEH, a significant holder in NET Power Inc., reported the sale of 1,288,653 Class A Common Stock shares between November 17 and December 9, 2025, reducing its beneficial ownership to 22.25%.
NYSE
Hellman & Friedman's latest Schedule 13D amendment for Sprinklr, Inc. reveals an updated beneficial ownership percentage following the expiration of certain warrants, maintaining a significant voting stake.
A Delaware court dismissed key claims against K&L Gates LLP and Clayton Parker in a lawsuit brought by William Anderson Wittekind's entity, Weird Science LLC, regarding Lunai Bioworks Inc. shares.
NYSE
IAC Inc. has increased its beneficial ownership in MGM Resorts International to 24.07% through open market purchases and the impact of MGM's share repurchase program.
NASDAQ
IAC Inc. has increased its beneficial ownership in MGM Resorts International to 24.07% through open market purchases and the impact of MGM's share repurchase program.
NYSE
A group of investment entities led by Mario Gabelli has disclosed a 5.06% beneficial ownership stake in Marcus Corp, held for investment purposes.
NASDAQ
Samsara BioCapital, L.P. reported a sale of 75,965 shares of VTV Therapeutics Class A Common Stock at $21.25 per share in a private transaction.