Asset Manager

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Protara Therapeutics

Protara Therapeutics was formed in 2019 through the reverse merger of ArTara Therapeutics with Proteon Therapeutics, taking the combined entity public on...

Protara Therapeutics

Protara Therapeutics was formed in 2019 through the reverse merger of ArTara Therapeutics with Proteon Therapeutics, taking the combined entity public on Nasdaq under the ticker TARA. Chief Executive Officer Jesse Shefferman, who previously served as President and CEO of ArTara, has led the organization from inception. The firm's founding thesis diverges from early-stage drug discovery by acquiring or in-licensing therapies with existing clinical data — compounds where human safety profiles are already understood — and advancing them through later-stage regulatory pathways in underserved indications. Protara deploys capital into two primary clinical-stage assets. TARA-002, derived from OK-432 — a lyophilized preparation of Streptococcus pyogenes that has been used as an immunopotentiator in Japan since 1975 — is being studied for high-risk non-muscle invasive bladder cancer and pediatric lymphatic malformations. The bladder cancer program targets patients who have failed standard BCG therapy, while the lymphatic malformation study represents a rare-disease pediatric opportunity with no approved pharmacologic treatment. A second asset, intravenous Choline Chloride, developed for patients on parenteral nutrition who develop intestinal failure-associated liver disease, addresses a specific nutritional deficiency that can cause progressive hepatic injury. Both programs draw on externally validated mechanisms of action, lowering translational risk relative to novel chemical entities. The firm operates from a single headquarters in New York City. As a clinical-stage biotech without revenue-generating products, Protara's scale is measured in pipeline breadth and cash runway rather than headcount or assets under management. In September 2024, the company presented updated Phase 2 data for TARA-002 in high-risk non-muscle invasive bladder cancer at the Society of Urologic Oncology annual meeting, reporting a 70% complete response rate at six months in the cohort of BCG-unresponsive patients. The company also completed a public equity offering in August 2024 that raised gross proceeds of approximately $40 million to fund continued development. Protara's structural edge is its clinical-repurposing model in an era where many biotechs chase first-in-class molecules with no human data. By starting with compounds such as OK-432 — which has a multi-decade safety record in Japan — the firm compresses development timelines and lowers the probability of late-stage safety failures that typically derail oncology pipelines. The strategy essentially functions as a disciplined arbitrage on existing clinical evidence, targeting regulatory endpoints in the United States and Europe that the original developers never pursued.

General information

Firm type

Asset Manager

Year founded

2019

AUM

Undisclosed

Location

Region

North America

Country

United States

City

New York

Corporate office

345 Park Avenue South, New York, NY 10010, United States

Principals

Jesse Shefferman

Chief Executive Officer & Director

Sector focus

Healthcare ServicesDigital Health

Frequently asked questions

Who runs investment decisions at Protara Therapeutics?

As a publicly traded holding company rather than an externally managed fund, capital allocation decisions rest with Chief Executive Officer Jesse Shefferman and the board of directors. Shefferman has led the firm since its formation, having previously founded ArTara Therapeutics, one of the predecessor entities in the 2019 merger that created Protara. The board includes directors with operational biotech experience who oversee financing strategy and pipeline prioritization in the manner of a standard public operating company.

How does Protara Therapeutics source its drug candidates?

Protara does not conduct in-house drug discovery. The firm identifies therapeutic compounds with existing human clinical data — typically sourced from academic medical centers, foreign regulatory bodies, or other pharmaceutical companies that deprioritized the asset — and licenses them for development against new US or European indications. The flagship compound TARA-002 is a proprietary formulation of OK-432, a bacterial immunopotentiator that Japanese clinicians have used since 1975, giving Protara decades of safety data before entering Phase 2 trials.

Does Protara Therapeutics participate in fund commitments or only direct development?

Protara is not a fund or a family office. It is a clinical-stage biotech company that invests directly in its internal pipeline, funding clinical trials, regulatory filings, and manufacturing through public equity markets rather than limited partner capital. As a Nasdaq-listed company (TARA), its financial structure more closely resembles an operating business than an investment vehicle.

What investment stages does Protara Therapeutics typically target?

Protara focuses on mid-stage clinical development, typically acquiring assets that have completed early human safety testing and advancing them through Phase 2 and registration-directed trials. This sits between preclinical discovery — which Protara avoids entirely — and commercial marketing, which the firm has not yet reached with any pipeline program.

What is Protara's known posture on co-investments alongside external partners?

Protara has not structured pooled investment vehicles or co-investment syndicates. As an operating pharmaceutical company, its external partnerships take the form of licensing agreements and clinical collaborations — for instance, the underlying rights to OK-432 originate from a Japanese manufacturer. The firm has not disclosed any for-profit co-investment funds open to third-party institutional allocators.

Which diseases does Protara Therapeutics explicitly target?

The firm's disclosed pipeline targets non-muscle invasive bladder cancer, pediatric lymphatic malformations, and intestinal failure-associated liver disease in patients dependent on parenteral nutrition. These are narrow indications with specific unmet regulatory needs, not broad therapeutic-area mandates. Protara has not announced programs in solid tumors outside the bladder, autoimmune disease, or metabolic disorders beyond IFALD.

How is Protara Therapeutics related to its predecessor companies?

Protara was created in 2019 through the reverse merger of ArTara Therapeutics — then a privately held rare-disease developer — into Proteon Therapeutics, a publicly traded biotech whose Phase 3 trial for a vascular access drug had missed its primary endpoint. The combined entity adopted ArTara's pipeline and leadership under the public listing inherited from Proteon, with Jesse Shefferman as CEO. Both predecessor companies ceased independent operations upon the merger.

Profile maintained by using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.

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