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BRIGHTLINE CAPITAL MANAGEMENT, LLC

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13F filer, CIK 1432450, Miami, FL

BRIGHTLINE CAPITAL MANAGEMENT, LLC reported $243,992,250 across 10 holdings for the quarter ended 2025-09-30, in a 13F-HR filed 2025-11-13.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0000919574-25-006647

Period
2025-09-30
Reported value
$244M
Holdings
10
Top 10 weight
100%
New
1
Sold out
6

Largest buys vs the previous quarter

SecurityShares changeApprox. value
DANnew+1,080,000$21.6M
CSTMadded+625,000$9.3M
AMTMadded+200,000$4.79M
VSATadded+36,000$1.05M
FLRadded+10,000$421K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
TPCexited-705,000-$33M
TOLexited-160,000-$18.3M
NEXTexited-1,450,000-$12.9M
TTIexited-2,653,000-$8.91M
SEIreduced-119,000-$4.76M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q3 2025

Share positions as resolved from 13F-HR 0000919574-25-006647, largest first. % of portfolio is the value over $243,992,250, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
VSATVIASAT INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 2,000,000 shares; 2025Q3: 2,036,000 shares 2,036,000$59.7M24.45%+36,000Timeline
SEISOLARIS ENERGY INFRAS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,100,000 shares; 2024Q4: 1,114,000 shares; 2025Q1: 1,117,000 shares; 2025Q2: 1,122,000 shares; 2025Q3: 1,003,000 shares 1,003,000$40.1M16.43%-119,000Timeline
AMTMAMENTUM HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 1,000,000 shares; 2025Q3: 1,200,000 shares 1,200,000$28.7M11.78%+200,000Timeline
CSTMCONSTELLIUM SEQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 712,000 shares; 2024Q4: 711,000 shares; 2025Q1: 745,000 shares; 2025Q2: 1,000,000 shares; 2025Q3: 1,625,000 shares 1,625,000$24.2M9.91%+625,000Timeline
FLRFLUOR CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 455,000 shares; 2024Q4: 523,000 shares; 2025Q1: 535,000 shares; 2025Q2: 534,000 shares; 2025Q3: 544,000 shares 544,000$22.9M9.38%+10,000Timeline
DANDANA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 1,080,000 shares 1,080,000$21.6M8.87%newTimeline
EOSEEOS ENERGY ENTERPRISES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,640,000 shares; 2024Q4: 1,659,000 shares; 2025Q1: 1,707,000 shares; 2025Q2: 1,723,000 shares; 2025Q3: 1,754,000 shares 1,754,000$20M8.19%+31,000Timeline
NVRIENVIRI CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,000,000 shares; 2024Q4: 1,105,000 shares; 2025Q1: 1,294,000 shares; 2025Q2: 1,400,000 shares; 2025Q3: 1,400,000 shares 1,400,000$17.8M7.28%0Timeline
MAGNMAGNERA CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 153,000 shares; 2025Q1: 556,000 shares; 2025Q2: 555,000 shares; 2025Q3: 560,000 shares 560,000$6.56M2.69%+5,000Timeline
Trinseo PLCTrinseo PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 945,000 shares; 2025Q1: 1,016,000 shares; 2025Q2: 1,022,000 shares; 2025Q3: 1,060,000 shares 1,060,000$2.49M1.02%+38,000

Sold out in Q3 2025

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
TPCTUTOR PERINI CORP705,000$33Mshares
TOLTOLL BROTHERS INC160,000$18.3Mshares
NEXTNEXTDECADE CORP1,450,000$12.9Mshares
TTITETRA TECHNOLOGIES INC DEL2,653,000$8.91Mshares
TPICQTPI COMPOSITES INC COM1,737,000$1.49Mshares
BWBABCOCK & WILCOX ENTERPRISES1,550,000$1.49Mshares

How Q3 2025 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0000919574-25-006647 base2025-11-13acceptance time not in the bulk data set