Latest Schedule 13D activist filings

AMEX
Eric Sprott and affiliated entities have reduced their beneficial ownership in Americas Gold & Silver Corp to 12.40% after selling 5 million shares.
OQB
Parag Saxena has reduced his beneficial ownership in Reviva Pharmaceuticals Holdings, Inc. to 2.8% as of March 20, 2026, triggering an Amendment No. 13 filing.
NYSE
Davidson Kempner Capital Management and affiliates sold 481,537 shares of Angel Oak Mortgage REIT, Inc. common stock, reducing their beneficial ownership to 14.66%.
NASDAQ
Baker Bros. Advisors increased its beneficial ownership limitation in Celcuity Inc. from 4.99% to 19.99% for certain prefunded warrants, signaling potential for increased influence.
NASDAQ
Agriculture Investment Group Corp. and Granosur Holding Limited have reduced their beneficial ownership in Bioceres Crop Solutions Corp. to 9.05% through recent share sales.
NASDAQ
David E. Lazar, co-Chief Executive Officer of Indaptus Therapeutics, Inc., sold a significant portion of his preferred stock holdings for $11.2 million and resigned from his co-CEO role, while remaining on the Board of Directors.
NASDAQ
Viking Cake BR, LLC and related parties report significant changes in beneficial ownership and a restructuring of a margin loan agreement for Black Rock Coffee Bar, Inc.
OTC.Pink
An investor group led by Heng Fai Ambrose Chan increased its beneficial ownership in Sharing Services Global Corp to 99.9% through convertible debt and warrants.
OID
Fusion Fuel Green PLC converted preferred stock into common shares, increasing its beneficial ownership in Quality Industrial Corp. to 51.9%.
NASDAQ
Fusion Fuel Green PLC converted preferred stock into common shares, increasing its beneficial ownership in Quality Industrial Corp. to 51.9%.
NASDAQ
Fresenius Medical Care's beneficial ownership in Humacyte, Inc. decreased to 8.4% due to share dilution, not share sales.
NASDAQ
J. Mariner Kemper's beneficial ownership in UMB Financial Corp. common stock has fallen below the 5% threshold following the physical settlement of forward sale agreements.
Jeffrey E. Eberwein has increased his beneficial ownership in Star Equity Holdings, Inc. to 28.3% of common stock, reflecting a significant stake.
NASDAQ
Activist investor Starboard Value LP has reached an agreement with TripAdvisor, Inc. to appoint two new independent directors and potentially two more, alongside significant corporate governance changes.
AMEX
Milton C. Ault III and affiliated entities have increased their beneficial ownership in Universal Safety Products, Inc. to 25.4% through recent share purchases and option holdings.
AMEX
Milton C. Ault III and affiliated entities increased their beneficial ownership in Universal Safety Products, Inc. to 25.4% through recent share purchases and option holdings.
OID
Ares Management and its affiliates have significantly increased their beneficial ownership in Ferrellgas Partners, L.P. to 13.8% following the conversion of Class B Units to Class A Units.
NYSE
A group led by Sir Martin E. Franklin has filed an exit Schedule 13D, ceasing to beneficially own more than 5% of Element Solutions Inc's common stock following the termination of a proxy agreement.
NYSE
Martin E. Franklin and associated entities have filed an exit Schedule 13D, reporting a reduction in their beneficial ownership of Element Solutions Inc common stock below the 5% threshold following the termination of a key proxy agreement.
OQX
Deutsche Telekom AG and its subsidiaries updated their beneficial ownership in T-Mobile US, Inc., detailing a novation of call options and new intercreditor agreements.
NASDAQ
Deutsche Telekom AG and its subsidiaries updated their beneficial ownership in T-Mobile US, Inc., detailing a novation of call options and new intercreditor agreements.
NYSE
BW Group Ltd. has significantly reduced its stake in Navigator Holdings Ltd. through a secondary public offering and a share repurchase, now holding 11.2% of outstanding common shares.
AMEX
BlockchAIn Digital Infrastructure, Inc. finalized its business combination, resulting in significant ownership stakes for Tiger Cloud LLC, VCV Digital Solutions LLC, and CEO Jerry Tang.
NASDAQ
Ronald M. Shaich and Act III entities increased their beneficial ownership in BJ's Restaurants Inc. to 8.8% through recent open market purchases.
NASDAQ
Frank Porter Stansberry, a significant shareholder, increased his beneficial ownership in MarketWise, Inc. to 58.29% through recent open market purchases.
NASDAQ
Merlin, Inc. CEO Matthew George has filed a Schedule 13D, revealing a 17.7% beneficial ownership stake following the company's recent business combination.
NASDAQ
RA Capital Management and its affiliates have reported a dilution of their beneficial ownership in Acrivon Therapeutics, Inc. to 21.6% due to an increase in outstanding shares, not through share disposition.
NASDAQ
Diamondback Energy, Inc. sold 510,071 Class A Common Stock shares of Viper Energy, Inc. to underwriters at $45.69 per share following an overallotment option exercise.
NASDAQ
RA Capital Management and its affiliates increased their beneficial ownership in SAB Biotherapeutics, Inc. to 9.9% through the acquisition of pre-funded warrants.
NYSE
Diana Shipping Inc. announced its intent to proceed with a proxy fight to elect six directors to Genco Shipping & Trading Ltd.'s board after its US$23.50 per share cash acquisition proposal was rejected.