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13F-HR filed by MASON CAPITAL MANAGEMENT LLC

MASON CAPITAL MANAGEMENT LLC filed this 13F-HR for the quarter ended 2026-06-30, filed 2026-08-14, with 9 holding rows worth $607,022,468.

Accession
0001104659-26-097052
Filed
2026-08-14
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q2 2026

A holdings report, 9 entries on the cover page, a total value of $607,022,468 stated on the cover page (in dollars after the unit check, H1), rows summing to $607,022,468 with VALUE read as dollars as filed, 13F file number 028-10413. The quarter's positions are built on this report. The resolved quarter.

The information table after summing rows of one CUSIP and put or call (H4), with the CUSIP and issuer name as filed. Values in dollars after the unit check (method).

Issuer as filedCUSIPClassAmountValueValue read asType
ATS CORPORATION00217Y104COM16,404,170$472,112,013dollars as filed
BROOKDALE SR LIVING INC112463104COM2,575,826$41,445,040dollars as filed
ENVIRI CORP415864107COM1,770,959$38,872,550dollars as filed
CLEAR CHANNEL OUTDOOR HLDGS18453H106COM9,828,401$23,784,730dollars as filed
GROUPON INC399473206COM NEW657,144$15,810,885dollars as filed
READY CAPITAL CORP75574U101COM4,319,933$7,559,883dollars as filed
JELD-WEN HLDG INC47580P103COM3,109,621$4,664,432dollars as filed
CONTEXTLOGIC HOLDINGS INC21078F109COM291,341$2,592,935dollars as filed
SIGNATURE BANK82669G104COM400,000$180,000dollars as filedValue about 1/1,000 of the price other filers imply, kept as filed and left out of ratios.

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001104659-26-097052this filing2026-08-14acceptance time not in the bulk data set