Investor Madison Avenue Partners, LP
13D/G Filings

This page shows a list of all the recent 13D/G filings made by Madison Avenue Partners, LP . Schedule 13D is commonly referred to as a “beneficial ownership report.” The term "beneficial owner" is defined under SEC rules. It includes any person who directly or indirectly shares voting power or investment power (the power to sell the security).

When a person or group of persons acquires beneficial ownership of more than 5% of a voting class of a company’s equity securities, they are required to file a Schedule 13D within ten days after the purchase. Click the link icon to see the full transaction history.

Date Form Target Prev
Shares
Current
Shares
Change
(Percent)
Ownership
(Percent)
Change
(Percent)
2026-05-15 13G/A MAGN / Magnera Corporation 1,780,649 1,590,616
2026-05-15 13G/A INDV / Indivior Pharmaceuticals, Inc. 6,280,502 4,315,162
2026-04-20 13G STAA / STAAR Surgical Company 2,854,710
2026-03-04 13G AIV / Apartment Investment and Management Company 12,347,991
2026-02-17 13G/A MAGN / Magnera Corporation 2,832,281 1,780,649
2026-02-17 13G/A INDV / Indivior Pharmaceuticals, Inc. 7,438,153 6,280,502
2026-02-17 13G/A KROS / Keros Therapeutics, Inc. 2,614,402 823,707
2026-01-29 13G MDRX / Veradigm Inc. 3,242,932 7,167,999
2025-11-14 13G/A MAGN / Magnera Corporation 3,198,329 2,832,281
2025-11-14 13G/A CRGX / CARGO Therapeutics, Inc. 4,193,626 0
2025-11-14 13G/A SAGE / Sage Therapeutics, Inc. 6,077,065 0
2025-08-14 13G/A SAGE / Sage Therapeutics, Inc. 4,920,763 6,077,065
2025-08-14 13G/A CRGX / CARGO Therapeutics, Inc. 3,113,693 4,193,626
2025-05-14 13G KROS / Keros Therapeutics, Inc. 2,614,402
2025-04-30 13D SLRN / Acelyrin, Inc. 5,089,260
2025-04-28 13G CRGX / CARGO Therapeutics, Inc. 3,113,693
2025-04-01 13G SAGE / Sage Therapeutics, Inc. 4,920,763
2025-03-18 13G INDV / Indivior Pharmaceuticals, Inc. 7,438,153
2025-02-14 13G/A OVID / Ovid Therapeutics Inc. 3,648,509 2,852,352
2025-02-14 13G/A WLY / John Wiley & Sons, Inc. 2,290,206 2,229,904
2024-11-14 13G MAGN / Magnera Corporation 3,198,329
2024-11-14 13G/A MDRX / Veradigm Inc. 6,100,902 3,242,932
2024-11-14 13G/A TBPH / Theravance Biopharma, Inc. 8,511,350 9,511,150
2024-11-14 13G/A CEE / The Central and Eastern Europe Fund, Inc. 371,267 79,400
2024-09-30 13G WLY / John Wiley & Sons, Inc. 2,290,206
2024-07-24 13G/A ONL / Orion Properties Inc. 2,989,565 150,449
2024-06-10 13G MDRX / Veradigm Inc. 6,100,902
2024-05-30 13G GHC / Graham Holdings Company 223,226
2024-05-03 13G/A TBPH / Theravance Biopharma, Inc. 7,012,226 8,511,350
2024-02-14 13G/A OVID / Ovid Therapeutics Inc. 3,609,054 3,648,509
2024-02-14 13G/A ONL / Orion Properties Inc. 4,781,496 2,989,565
2024-02-14 13G/A GIII / G-III Apparel Group, Ltd. 3,377,516 1,323,110
2024-01-22 13G CEE / The Central and Eastern Europe Fund, Inc. 371,267
2023-12-11 13G/A LNSR / LENSAR, Inc. 669,046 45,743
2023-07-31 13G OVID / Ovid Therapeutics Inc. 3,609,054
2023-02-23 13G GIII / G-III Apparel Group, Ltd. 3,377,516
2023-02-14 13G/A TBPH / Theravance Biopharma, Inc. 6,648,025 7,012,226
2023-02-14 13G/A ONL / Orion Properties Inc. 4,137,453 4,781,496
2023-02-14 13G/A PFSW / PFSWEB Inc 2,394,072 2,633,189
2023-02-14 13G/A LNSR / LENSAR, Inc. 676,109 669,046
2022-04-14 13G ONL / Orion Properties Inc. 4,137,453
2022-03-04 13G/A PFSW / PFSWEB Inc 1,635,961 2,394,072
2022-02-14 13G/A TBPH / Theravance Biopharma, Inc. 4,567,413 6,648,025
2022-02-14 13G/A PFSW / PFSWEB Inc 1,621,725 1,635,961
2022-02-14 13G/A LNSR / LENSAR, Inc. 637,208 676,109
2022-02-14 13G/A SLVM / Sylvamo Corporation 2,213,695 2,090,335
2022-02-14 13G/A JRVR / James River Group Holdings, Inc. 2,300,490 794,837
2021-11-05 13G JRVR / James River Group Holdings, Inc. 2,300,490
2021-11-01 13G SLVM / Sylvamo Corporation 2,213,695
2021-10-22 13G PFSW / PFSWEB Inc 1,621,725
2021-09-27 13G TBPH / Theravance Biopharma, Inc. 4,567,413
2021-05-27 13D/A 85172J101 / Springleaf Holdings, Inc. 1,767,193
2021-03-12 13D 85172J101 / Springleaf Holdings, Inc. 2,289,999
2021-03-12 13D 85172J101 / Springleaf Holdings, Inc. 2,289,999
2021-02-16 13G STGW / Stagwell Inc. 3,871,434 3,871,434
2021-02-16 13G STGW / Stagwell Inc. 3,871,434 3,871,434
2021-02-12 13G LNSR / LENSAR, Inc. 637,208
2020-02-14 13G SPNV / Supernova Partners Acquisition Company Inc - Class A 793,858