Latest Schedule 13D activist filings

NYSE
Beretta Holding S.A. has filed an amended Schedule 13D, confirming its 9.95% stake in Sturm, Ruger & Company, Inc. and signaling a potential pursuit of strategic alternatives, including board representation.
NASDAQ
Valor Buyer LP and affiliated entities have ceased to beneficially own 5% or more of Verint Systems Inc. common stock following a disposition related to a merger.
NASDAQ
Medpace Holdings, Inc. founder August J. Troendle significantly reduced his stake, selling common stock worth over $149 million in open market transactions.
NASDAQ
Two Seas Capital LP and its affiliates filed an Amendment No. 4 to Schedule 13D, updating their beneficial ownership in Core Scientific, Inc. to 7.9% and detailing recent trading activities.
AMEX
Tether Holdings and its affiliates have increased their beneficial ownership in Gold Royalty Corp. to 13.1% through recent open market purchases.
NYSE
Jonathan M. Rothberg, founder of Butterfly Network, Inc., sold over 2.46 million Class A common shares in November 2025 for estate planning purposes.
NYSE
D. E. Shaw & Co. and its affiliates have increased their beneficial ownership in Enviri Corporation to 5.4%, converting their regulatory disclosure from Schedule 13G to 13D following Enviri's Clean Energy business separation.
AMEX
Henry Posner III has filed a Schedule 13D, revealing a 5.0% beneficial ownership in Power REIT, citing the shares as an attractive investment opportunity.
NASDAQ
Blackstone entities have entered into forward sale agreements with UBS AG to divest their entire 28.9% stake in Bumble Inc. Class A Common Stock.
NASDAQ
HWH International's Chairman and CEO, Heng Fai Ambrose Chan, significantly increased his beneficial ownership to 81.3% after receiving a 1,000,000 share compensation grant.
NASDAQ
Activist investor Spruce House has reduced its stake in Cimpress plc following recent stock appreciation, while continuing to evaluate strategic changes for the company.
NYSE
Lennar Corporation has finalized its exchange offer, divesting nearly all of its Class A common stock in Millrose Properties, Inc.
NYSE
Lennar Corporation announced the final results of its exchange offer, significantly reducing its stake in Millrose Properties, Inc. Class A Common Stock.
NASDAQ
Strategic EP, LLC and Alexander Chase Deitch have acquired a 5.8% stake in Netcapital Inc., intending to push for a high-value accretive transaction.
NASDAQ
ValueAct Capital Master Fund and related entities have reduced their beneficial ownership in Insight Enterprises, Inc. to 4.7%, triggering the termination of their Schedule 13D filing obligation.
Lingtao Kong's beneficial ownership in Ridgetech Inc. now stands at 12.2% due to an increase in outstanding shares, with no personal share transactions since March 2025.
NYSE
BW Altor Pte. Ltd. has increased its beneficial ownership in Cadeler A/S to 27.44% through recent share acquisitions totaling over 17.6 million shares.
NYSE
Sit Investment Associates and Sit Fixed Income Advisors II report a 47.5% beneficial ownership stake in Putnam Master Intermediate Income Trust, detailing recent share transactions.
NYSE
Engine Capital and Civeo Corp have entered a Cooperation Agreement, leading to the appointment of two Engine Capital nominees to Civeo's Board of Directors.
NASDAQ
Galloway Capital Partners, LLC and affiliates have disclosed a 6.01% stake in Noodles & Co, stating the company's shares are undervalued and management needs to protect equity value.
NYSE
Standard Investments and its affiliates have disclosed a 5.7% beneficial ownership stake in Ashland Inc., signaling potential engagement on strategic and governance matters.
NYSE
Nerdy Inc.'s CEO and Chairman, Charles Cohn, along with his spouse Allison Cohn, have significantly increased their beneficial ownership in the company through recent open market purchases.
Scilex Holding Company has increased its beneficial ownership in Datavault AI Inc. to 47.99% after purchasing and exercising a pre-funded warrant for approximately $141.9 million in Bitcoin.
NASDAQ
Scilex Holding Company has significantly increased its beneficial ownership in Datavault AI Inc. to 47.99% after purchasing and exercising a Pre-Funded Warrant.
NASDAQ
Castle Creek Capital Partners VII, LP has significantly reduced its stake in CF Bankshares Inc., selling 81,617 shares for nearly $2 million.
NASDAQ
Republic Airways Holdings Inc. (formerly Mesa Air Group, Inc.) has completed its merger with Legacy Republic, with United Airlines Holdings Inc. forgiving significant debt and entering a 10-year service agreement.
Republic Airways Holdings Inc. finalized its merger with Legacy Republic, resulting in United Airlines Holdings, Inc. holding an 18.2% stake and forgiving significant debt.
NASDAQ
Pangaea Logistics Solutions Ltd. has entered into an agreement with major shareholder Strategic Shipping Inc., leading to a board expansion and the appointment of Paul M. Leand, Jr. as a new director.
An activist investor group, led by Gabriel Gliksberg, has filed a Schedule 13D, challenging Nabors Energy Transition Corp. II's plan to allocate assets from a failed transaction, arguing it's improper and inconsistent with fiduciary duties.
William Anderson Wittekind's beneficial ownership in Lunai Bioworks Inc. decreased to 6.8% following the Issuer's recent share sale.