What does New Rhein invest in?
New Rhein invests most often at Series A (100% of the rounds on record), in sectors such as Longevity, Health-tech and E-health.

United States · Investor
Last cheque observed Feb 2026; 2 cheques on record.
Deploying nowPrivate equity
1 cheques in the last 12 months
Mostly Series A: 100% of its rounds
Sole investor in 1 rounds, median $12M
Every round we can evidence, newest first2 appearances
1 round
1 round
An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor.
Named by the firm itself, on a filing, its Form ADV or its company registration4 named
We also hold 13 people at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them.
From the firm's own filings with the SEC, which it must file accurately by law
Funds on its Form ADV
5 private funds, $145M in gross assets · filed May 2024
From their own portfolio page (on their website)
Investor Portal
Weaker than a round we watched, stronger than a list somebody sold us. A firm is far less willing to put a company on its own site that it never funded.
The latest companies New Rhein put money into.
New Rhein invests most often at Series A (100% of the rounds on record), in sectors such as Longevity, Health-tech and E-health.
2 investments on record, 1 of them in the last 12 months, and it led 1. The most recent was in Feb 2026.
Its most recent investments on record: Alveus Therapeutics Inc. (Series A, Feb 2026) and Neuraptive Therapeutics (Series A, Dec 2018).
The median round it joins is $104M. It says it writes cheques of $100K to $50M.
Yes: it is actively investing, with 1 investments in the last 12 months.
New Rhein is a private equity firm based in Philadelphia, United States.
About $291M, as regulatory assets under management (Oct 2026).
New Rhein was founded in 2011.
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