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TRV GP IV, LLC

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13F filer, CIK 1688325, Boston, MA

TRV GP IV, LLC reported $253,684,290 across 2 holdings for the quarter ended 2026-06-30, in a 13F-HR filed 2026-08-10.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001193125-26-340720

Period
2026-06-30
Reported value
$254M
Holdings
2
Top 10 weight
100%
New
0
Sold out
0

Holdings, Q2 2026

Share positions as resolved from 13F-HR 0001193125-26-340720, largest first. % of portfolio is the value over $253,684,290, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
MAZEMAZE THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 6,073,958 shares; 2025Q2: 6,073,958 shares; 2025Q3: 6,073,958 shares; 2025Q4: 4,473,958 shares; 2026Q1: 4,473,958 shares; 2026Q2: 4,473,958 shares 4,473,958$134M52.63%0Timeline
TNGXTANGO THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 16,859,075 shares; 2024Q4: 16,859,075 shares; 2025Q1: 16,859,075 shares; 2025Q2: 16,859,075 shares; 2025Q3: 13,863,975 shares; 2025Q4: 7,874,574 shares; 2026Q1: 6,374,574 shares; 2026Q2: 6,374,574 shares 6,374,574$120M47.37%0Timeline

How Q2 2026 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 0001193125-26-340720 base2026-08-10acceptance time not in the bulk data set

Filings

Every filing of this filer: 13F reports and notices, the 13D and 13G it filed or is a reporting person of, and Forms 3, 4 and 5 it reported as an owner.

FilingSubjectFiledAcceptedIngested
13F-HR 0001193125-26-340720 Quarter ended 2026-06-302026-08-10acceptance time not in the bulk data set
13F-HR 0001193125-26-212011 Quarter ended 2026-03-312026-05-07acceptance time not in the bulk data set
13F-HR 0001193125-26-051795 Quarter ended 2025-12-312026-02-13acceptance time not in the bulk data set
13F-HR 0001193125-25-280198 Quarter ended 2025-09-302025-11-13acceptance time not in the bulk data set
13F-HR 0000950123-25-007372 Quarter ended 2025-06-302025-08-08acceptance time not in the bulk data set
13F-HR 0000950123-25-004486 Quarter ended 2025-03-312025-05-09acceptance time not in the bulk data set
13F-HR 0000950123-25-002038 Quarter ended 2024-12-312025-02-13acceptance time not in the bulk data set
13F-HR 0000950123-24-010461 Quarter ended 2024-09-302024-11-06acceptance time not in the bulk data set
13F-HR 0000950123-24-007627 Quarter ended 2024-06-302024-08-09acceptance time not in the bulk data set
13F-HR 0000950123-24-004644 Quarter ended 2024-03-312024-05-13acceptance time not in the bulk data set
13F-HR 0000950123-24-002574 Quarter ended 2023-12-312024-02-14acceptance time not in the bulk data set
13F-HR 0000950123-23-010186 Quarter ended 2023-09-302023-11-13acceptance time not in the bulk data set
13F-HR 0000950123-23-007236 Quarter ended 2023-06-302023-08-10acceptance time not in the bulk data set
13F-HR 0000950123-23-004749 Quarter ended 2023-03-312023-05-12acceptance time not in the bulk data set
13F-HR 0000950123-23-002590 Quarter ended 2022-12-312023-02-14acceptance time not in the bulk data set
13F-HR 0000950123-22-010768 Quarter ended 2022-09-302022-11-03acceptance time not in the bulk data set
13F-HR 0000950123-22-008835 Quarter ended 2022-06-302022-08-12acceptance time not in the bulk data set
13F-HR 0000950123-22-005022 Quarter ended 2022-03-312022-05-10acceptance time not in the bulk data set
13F-HR 0000950123-22-002439 Quarter ended 2021-12-312022-02-14acceptance time not in the bulk data set
13F-HR 0000950123-21-014083 Quarter ended 2021-09-302021-11-05acceptance time not in the bulk data set
13F-HR 0000950123-21-010329 Quarter ended 2021-06-302021-08-11acceptance time not in the bulk data set
13F-HR 0000950123-21-006068 Quarter ended 2021-03-312021-05-12acceptance time not in the bulk data set
13F-HR 0000950123-21-002282 Quarter ended 2020-12-312021-02-16acceptance time not in the bulk data set
13F-HR 0000950123-20-010990 Quarter ended 2020-09-302020-11-06acceptance time not in the bulk data set
13F-HR 0000950123-20-007931 Quarter ended 2020-06-302020-08-10acceptance time not in the bulk data set
13F-HR 0000950123-20-004371 Quarter ended 2020-03-312020-05-11acceptance time not in the bulk data set
13F-HR 0000950123-20-000973 Quarter ended 2019-12-312020-02-05acceptance time not in the bulk data set
13F-HR 0000950123-19-010025 Quarter ended 2019-09-302019-11-04acceptance time not in the bulk data set
13F-HR 0000950123-19-007106 Quarter ended 2019-06-302019-08-06acceptance time not in the bulk data set
13F-HR 0000950123-19-003896 Quarter ended 2019-03-312019-05-03acceptance time not in the bulk data set
13F-HR 0000950123-19-000382 Quarter ended 2018-12-312019-01-28acceptance time not in the bulk data set