Apple Tree Partners II LP has sold ALRN and made no open-market buys since Jan 2018

Apple Tree Partners II LP is a limited partnership investment fund associated with Apple Tree Partners, a New York–headquartered life sciences venture capital firm that specializes in building biotechnology and therapeutics companies.( Apple Tree Partners was founded in 1999 and has developed a 25‑year track record of translating emerging scientific advances into novel treatments, supporting portfolio companies from pre‑IP concepts through clinical development, IPO, and strategic transactions.( Within this fund complex, Apple Tree Partners II LP functions as one of the firm’s closed venture funds, participating as a significant shareholder and 10% corporate insider in issuers such as Aileron Therapeutics Inc. (ALRN) through its structured investment vehicles.(

As part of the broader Apple Tree Partners platform, Apple Tree Partners II LP benefits from the firm’s flexible capital, strategic insight, and in‑house operational resources, which are deployed to create and grow research‑driven life sciences enterprises.( Apple Tree Partners is led by founder and managing partner Dr. Seth L. Harrison, along with partners and investment professionals who oversee funds including Apple Tree Partners II and related annex vehicles.( Operating from its headquarters at 230 Park Avenue in New York and additional offices in Cambridge (MA), London, and South San Francisco, the firm’s funds—including Apple Tree Partners II LP—take active roles in portfolio governance and long‑term company building across the biotechnology sector.(

Written by Perplexity from public sources.