Red Tree Management, LLC — 13F Holdings & Portfolio

CIK 2055980 · latest 13F-HR filed 2026-10-15

Red Tree Management, LLC manages $116.7M in 13F-reported U.S. long-equity assets across 3 reported positions as of its 2026-09-30 13F-HR filing. Its largest disclosed positions are BCAX (46.57%), CBLL (46.09%), CTNM (7.34%). Quarter over quarter (versus its 2026-06-30 filing) the fund opened 0 new positions and exited 0; 1 existing position rose in reported value and 2 fell.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

Loading holdings…
AUM
$116.7M

Long-equity book

Holdings
3

Distinct positions

Period
2026-09-30

Filed 2026-10-15

Q/Q Activity
+0 / −0 / ↑1 / ↓2

vs 2026-06-30

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q3 26

Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.

Sector mix

% of 13F value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q2 26 → Q3 26

Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.

13F assets and positions

4 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 100%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People

As of the firm’s regulatory filing dated Mar 16, 2026.

Address
2055 WOODSIDE ROAD
SUITE 270
REDWOOD CITY, CA 94061
Phone
(650) 492-7900
Name Title / Status Ownership Type
LUKATCH, HEATH SCOTT ControlMANAGING DIRECTOR
since Feb 2020
75% or moreIndividual
Lukatch, Carrie, MetzMEMBER
since Dec 2021
Less than 5%Individual
POTTER, MATTHEW, THOMASCFO
since Aug 2020
Less than 5%Individual

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

Top Adds (vs prior quarter)

Show all 1 →

New Positions

  • No new positions this quarter.
Show all 0 →

Exited Positions

  • No exits this quarter.
Show all 0 →

Red Tree Management, LLC Holdings (2026-09-30)

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 BICARA THERAPEUTICS INC BCAX 055477103 $54.4M 46.57% 2,920,509 SH
2 CERIBELL INC CBLL 15678C102 $53.8M 46.09% 2,205,661 SH
3 CONTINEUM THERAPEUTICS INC CTNM 21217B100 $8.6M 7.34% 638,158 SH
Filing History
Period Filed AUM Holdings Accession
2026-09-30 2026-10-15 $116.7M 3 0002055980-26-000012
2026-06-30 2026-07-22 $147.3M 3 0002055980-26-000008
2026-03-31 2026-04-22 $111.8M 3 0002055980-26-000006
2025-12-31 2026-02-11 $109.0M 3 0002055980-26-000002
Filer Information
Address
2055 WOODSIDE ROAD, SUITE 270
REDWOOD CITY, CA 94061
Phone
(650) 851-6809
Filing Manager
RED TREE MANAGEMENT, LLC
REDWOOD CITY, CA
Signatory
Heath Lukatch, PhD
Managing Director