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Pivotal bioVenture Partners Investment Advisor LLC

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13F filer, CIK 1844645, SAN FRANCISCO, CA

Pivotal bioVenture Partners Investment Advisor LLC reported $279,777,960 across 13 holdings for the quarter ended 2026-03-31, in a 13F-HR filed 2026-05-14. Its ten largest share positions make up 98.32% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001012975-26-000421

Period
2026-03-31
Reported value
$280M
Holdings
13
Top 10 weight
98.32%
New
2
Sold out
1

Part of the filer group Pivotal bioVenture Partners Investment Advisor LLC

How groups are built

Largest buys vs the previous quarter

SecurityShares changeApprox. value
AVTXnew+295,933$4.42M
TRVIadded+296,944$3.54M
RLYBnew+300,579$2.7M

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
OCSreduced-608,375-$16.2M
RALLYBIO CORPexited-2,404,644-$1.65M
ARQTreduced-10,732-$253K
BOLTreduced-51,992-$210K

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, Q1 2026

Share positions as resolved from 13F-HR 0001012975-26-000421, largest first. % of portfolio is the value over $279,777,960, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
PCVXVAXCYTE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 639,539 shares; 2024Q4: 703,834 shares; 2025Q1: 710,734 shares; 2025Q2: 1,305,125 shares; 2025Q3: 1,372,425 shares; 2025Q4: 1,372,425 shares; 2026Q1: 1,372,425 shares 1,372,425$79.8M28.51%0Timeline
OCSOCULIS HOLDING AGQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 1,595,918 shares; 2024Q4: 1,737,696 shares; 2025Q1: 2,300,774 shares; 2025Q2: 2,300,774 shares; 2025Q3: 2,300,774 shares; 2025Q4: 2,288,658 shares; 2026Q1: 1,680,283 shares 1,680,283$44.7M15.97%-608,375Timeline
EVMNEVOMMUNE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 1,926,943 shares; 2026Q1: 1,926,943 shares 1,926,943$44.3M15.83%0Timeline
ARQTARCUTIS BIOTHERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 2,120,508 shares; 2024Q4: 2,120,508 shares; 2025Q1: 2,120,508 shares; 2025Q2: 2,120,508 shares; 2025Q3: 2,120,508 shares; 2025Q4: 1,366,624 shares; 2026Q1: 1,355,892 shares 1,355,892$31.9M11.42%-10,732Timeline
TRVITREVI THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 1,146,110 shares; 2025Q3: 1,256,782 shares; 2025Q4: 1,256,782 shares; 2026Q1: 1,553,726 shares 1,553,726$18.5M6.63%+296,944Timeline
IMNMIMMUNOME INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 502,512 shares; 2025Q4: 732,512 shares; 2026Q1: 732,512 shares 732,512$16M5.73%0Timeline
MPLTMAPLIGHT THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 611,447 shares; 2026Q1: 611,447 shares 611,447$12.4M4.44%0Timeline
ZBIOZENAS BIOPHARMA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 650,695 shares; 2024Q4: 736,645 shares; 2025Q1: 736,645 shares; 2025Q2: 779,045 shares; 2025Q3: 779,045 shares; 2025Q4: 591,991 shares; 2026Q1: 591,991 shares 591,991$11.6M4.14%0Timeline
BIOABIOAGE LABS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 527,647 shares; 2024Q4: 653,374 shares; 2025Q1: 653,374 shares; 2025Q2: 653,374 shares; 2025Q3: 653,374 shares; 2025Q4: 653,374 shares; 2026Q1: 653,374 shares 653,374$11.4M4.08%0Timeline
AVTXAVALO THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 295,933 shares 295,933$4.42M1.58%newTimeline
RLYBRALLYBIO CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 300,579 shares 300,579$2.7M0.96%newTimeline
RXRXRECURSION PHARMACEUTICALS INQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 595,518 shares; 2025Q1: 595,518 shares; 2025Q2: 595,518 shares; 2025Q3: 595,518 shares; 2025Q4: 595,518 shares; 2026Q1: 595,518 shares 595,518$1.83M0.65%0Timeline
BOLTBOLT BIOTHERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 94,573 shares; 2025Q3: 94,573 shares; 2025Q4: 94,573 shares; 2026Q1: 42,581 shares 42,581$172K0.06%-51,992Timeline

Sold out in Q1 2026

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

SecurityShares beforeValue beforeType
RALLYBIO CORPRALLYBIO CORP2,404,644$1.65Mshares

How Q1 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 0001012975-26-000421 base2026-05-14acceptance time not in the bulk data set