Private company
Who owns Callan Ridge JV
One company in the researched set discloses a stake in Callan Ridge JV, worth $74m between them. Callan Ridge JV is private, so no 13F reports it: a 13F covers exchange listed positions only. These figures exist because each holder disclosed the stake in its own filings.
Callan Ridge JV - Profile
- Type
- joint venture
- Based in
- United States
- Founded
- 2024
Callan Ridge JV holds Callan Ridge, a two building, roughly 185,000 square foot Class A laboratory campus in the Torrey Pines life science cluster of San Diego, California, next to Torrey Pines Science Park. Construction began in 2021 and the three storey campus is fully leased to Turning Point Therapeutics, a Bristol Myers Squibb subsidiary, on a lease running to April 2035, with the first 105,000 square foot phase commencing in July 2023 and the remaining 80,000 square feet in July 2024. The buildings use electrochromic windows, photovoltaic glass panels, recycled steel and concrete, drought tolerant landscaping and a large single building green roof, and were built to target LEED Gold certification. The venture was formed in January 2024 between Healthpeak Properties, which developed the campus, and Breakthrough Properties, itself a partnership of Tishman Speyer and Bellco Capital, at a campus value of $236 million.
Source
Callan Ridge JV files nothing with the SEC, so none of this comes from a filer record. The description was written for this site in August 2026 from Healthpeak Properties: New $236 Million Joint Venture with Breakthrough Properties on the Callan Ridge Lab Campus (10 January 2024), Breakthrough Properties: Breakthrough Acquires Majority Interest in Callan Ridge and REBusinessOnline: Breakthrough Properties Acquires Majority Stake in $236M Callan Ridge Life Sciences Campus in San Diego. The ownership figures below come from the holders' filings instead, and are sourced row by row.
The disclosed stakes
One row per position. Where a holder reports the same company in two share classes, both rows are shown rather than summed, because the class is part of a position's identity.
Where each figure comes from
A private stake has no ownership form behind it, so the source is always the holder's own filing or disclosure. Anything modelled says so, with the arithmetic.
- Healthpeak Properties, Inc., as of 30 Jun 2026. Lab segment, 2 properties, 35% ownership percentage per Note 7's per-entity table. Carrying amount at 30 Jun 2026: $73,729 thousand = $73,729,000 (vs $74,369 thousand at 31 Dec 2025). Carrying (book) value under the equity method, not a market value. source
What this page is not
It is not a complete register. It lists the holders who happen to be inside the researched set and disclosed the stake themselves. A private company can have many other shareholders, and nothing here rules them out: venture investors, founders and employees usually appear in no public filing at all. Percentages are of Callan Ridge JV where a holder stated one, and are missing where no holder did.