Peptilogics

Peptilogics

Clinical-stage peptide therapeutics via ML

Overview

Peptilogics is a clinical-stage biotechnology company that designs and develops peptide therapeutics. Its approach combines peptide biology with machine learning to scale discovery and precision-engineer novel peptides. Its lead candidate, PLG0206, is a broad-spectrum anti-infective being studied for prosthetic joint infection, and the company focuses on treating serious, life-threatening diseases through clinical programs. Peptilogics differentiates itself by integrating ML-driven design with peptide science to create targeted, potent therapeutics rather than relying on traditional discovery methods. The company’s goal is to bring a new generation of peptide drugs to patients by advancing drug candidates through development and potential commercialization.

About Peptilogics

Simplify's Rating
Why Peptilogics is rated
C+
Rated B on Competitive Edge
Rated C on Growth Potential
Rated C on Differentiation

Industries

Data & Analytics

AI & Machine Learning

Biotechnology

Healthcare

Company Size

11-50

Company Stage

Series B

Total Funding

$126.7M

Headquarters

Pittsburgh, Pennsylvania

Founded

2013

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Simplify's Take

What believers are saying

  • Phase 1b showed one recurrence among 13 treated patients through 12 months.
  • Peptilogics closed a $78 million Series B2, lifting total equity funding near $120 million.
  • RETAIN spans up to 240 patients across 50 sites in the US, UK, Australia.

What critics are saying

  • RETAIN enrolled its first patient March 10, 2026; pivotal readout remains years away.
  • All value depends on PLG0206; a Phase 2/3 failure destroys Peptilogics.
  • No approved PJI therapy exists, so physicians can still default to surgery and antibiotics.

What makes Peptilogics unique

  • PLG0206 targets biofilm at the infection source, unlike standard systemic antibiotics.
  • RETAIN is a randomized, double-blind Phase 2/3 trial in PJI.
  • Tim Czartoski joined the board on August 18, 2026, adding orthopedic commercialization expertise.

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Funding

Total Funding

$126.7M

Above

Industry Average

Funded Over

9 Rounds

Notable Investors:
Series B funding is typically for startups that have proven their business model and need more funding to expand rapidly—often by entering new markets or adding more products. Investors are usually venture capital firms that specialize in later-stage investments.
Series B Funding Comparison
Above Average

Industry standards

$35M
$45M
Linktree
$65M
Substack
$78M
Peptilogics
$100M
ClickUp

Benefits

Insurance, Health & Wellness - Dental Insurance, Disability Insurance, Flexible Spending Account (FSA), Health Insurance, Health Savings Account (HSA), Life Insurance, Mental Health Care, Supplemental Life Insurance, Vision Insurance

401K Plan

Family & Parenting - Dependent Care, Family Medical Leave, Maternity & Paternity Leave, Work From Home

Vacation & Time Off - Bereavement Leave, Paid Holidays, Sick Days, Vacation & Paid Time Off

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

4%

2 year growth

0%
Trade Show News
Aug 18th, 2026
Former president of DePuy Synthes U.S. Joins Peptilogics board.

Former president of DePuy Synthes U.S. Joins Peptilogics board. Tim Czartoski's appointment reinforces moving beyond the device in orthopedic surgery towards therapeutic treatment of device-related infections Tim Czartoski, orthopedic executive and former president of DePuy Synthes U.S. and most recently president of U.S. Surgical and Global R&D at Enovis, has joined the Peptilogics board of directors. His background in leading large orthopedic device businesses, including successful launches of robotic technology platforms and one of the industry's most advanced knee systems, lends significant value to Peptilogics as it moves towards bringing meaningful innovation to market. Czartoski sees tremendous opportunity in therapeutic solutions that advance or complement current approaches to prosthetic joint infections (PJI) and medical device-related infections (MDRI), complications that have been addressed almost exclusively through device and surgical innovation for more than fifty years. PITTSBURGH-(BUSINESS WIRE)-Tim Czartoski, orthopedic executive and former president of DePuy Synthes U.S. and most recently president of U.S. Surgical and Global R&D at Enovis, has joined the Peptilogics board of directors. His background in leading large orthopedic device businesses, including successful launches of robotic technology platforms and one of the industry's most advanced knee systems, lends significant value to Peptilogics as it moves towards bringing meaningful innovation to market. Czartoski sees tremendous opportunity in therapeutic solutions that advance or complement current approaches to prosthetic joint infections (PJI) and medical device-related infections (MDRI), complications that have been addressed almost exclusively through device and surgical innovation for more than fifty years. "Infection is the most significant, unsolved problem in orthopedics, and I've spent my career watching surgeons challenged to address them and the persistent biofilm with the tools available. Devices alone aren't going to solve this," said Czartoski. Share "Infection is the most significant, unsolved problem in orthopedics, and I've spent my career watching surgeons challenged to address them and the persistent biofilm with the tools available. Devices alone aren't going to solve this," said Czartoski. "Peptilogics is the first group I've seen approaching the root cause with a drug designed specifically for it, and I wanted to be part of what comes next." "The only real tool surgeons have had against device-related infections is more surgery. We are aiming to change that with zaloganan, and Tim is going to help us change it," said Jonathan Steckbeck, Ph.D., CEO of Peptilogics. "He's led billion-dollar launches at the largest orthopedic companies in the world, and he knows what it takes to change surgical practice. As we move forward, his commercial experience, instincts and relationships will be invaluable." Czartoski is passionate about healthcare and orthopedic innovation. He spent 22 years at DePuy Synthes (Johnson & Johnson), where he led the $5.4B US orthopedics business across Joint Reconstruction, Trauma, Spine, Sports, and CMF. He then served as president of U.S. Surgical and Global R&D at Enovis. He also serves as a volunteer board director at Matthew 25, a non-profit clinic that provides free healthcare to those unable to afford insurance in his local community. He holds an M.S. in Technology Management from Columbia University, an MBA from the University of Notre Dame, and a B.S. from The Ohio State University. About Peptilogics Peptilogics is a surgical therapeutics company dedicated to curing and preventing devastating medical device-related infections. The company's lead candidate, zaloganan (PLG0206), is a first-in-class, broad-spectrum anti-biofilm drug candidate currently being evaluated in the RETAIN Phase 2/3 registration trial for the treatment of prosthetic joint infection (PJI), the first of multiple potential indications in the broader medical device-related infection market. For more information, visit www.peptilogics.com. Forward-Looking Statements This press release contains forward-looking statements that involve substantial risks, assumptions, and uncertainties. Forward-looking statements are often identified by words such as, but not limited to, "believe," "estimate," "intend," "may," "plan," "potentially," "will," "expect," "enable," "likely," or the negative of these terms or other similar expressions. All statements, other than statements of historical facts, regarding management's expectations, beliefs, goals, plans, or Peptilogics, Inc.'s prospects should be considered forward-looking statements. Readers are cautioned that actual results may differ materially from projections or estimates due to a variety of important factors. These forward-looking statements are made as of the date of this press release, and Peptilogics, Inc. assumes no obligation to update the forward-looking statements, or to update the reasons why actual results could differ from those projected in the forward-looking statements, except as required by law. Contacts. Media Contact: Joe Duraes Pazanga Health Communications [email protected] (917) 687-6419 More News From Peptilogics PITTSBURGH-( BUSINESS WIRE )-Peptilogics, a surgical therapeutics company dedicated to curing and preventing devastating medical device-related infections (MDRI), has announced the enrollment of the first patient in the RETAIN Phase 2/3 registration trial by Dr. Toan Le at the University of Cincinnati Medical Center. The trial is evaluating PLG0206, a first-in-class anti-biofilm drug candidate, in patients with prosthetic joint infection (PJI), the first of multiple potential MDRI indications...

Technical.ly
May 13th, 2026
Pittsburgh biotech starts pivotal trial for joint infections

Peptilogics is testing a treatment that could help people with infected hip and knee implants avoid hardware removal and a second operation.

FinSMEs
Oct 16th, 2025
Peptilogics Raises $78M in Series B2 Funding

Peptilogics raises $78M in Series B2 funding. Peptilogics, a Pittsburgh, PA-based clinical-stage biotechnology company developing surgical therapeutics to effectively treat and prevent serious medical device infections, closed a $78m Series B2 financing round. Presight Capital, Thiel Bio, and Founders Fund led the round, with participation from new investors AMR Action Fund, Narya Capital, and Beyond Ventures. This brings Peptilogics' total equity funding to approximately $120m, along with substantial grant support from CARB-X. The company intends to use the funds to conduct the Phase 2/3 pivotal trial of zaloganan (PLG0206), an investigational treatment for prosthetic joint infections (PJI). Led by CEO Jonathan Steckbeck, PhD., and COO Nick Pachuda, Peptilogics is developing therapeutics for orthopedic hardware-related infections. The company's lead candidate, zaloganan (PLG0206), is an investigational treatment for prosthetic joint infections currently in clinical development. In Peptilogics' Phase 1b study, zaloganan irrigation administered during DAIR procedures resulted in 13 of 14 patients (93%) remaining infection-free at 12 months.

PR Newswire
Oct 16th, 2025
Peptilogics Raises $78M for Zaloganan Trial

Peptilogics has raised $78 million in a Series B2 financing round to advance its investigational treatment, zaloganan (PLG0206), into a Phase 2/3 pivotal trial for prosthetic joint infections (PJI). The round was led by Presight Capital, Thiel Bio, and Founders Fund, with new investors including AMR Action Fund, Narya Capital, and Beyond Ventures. This brings Peptilogics' total equity funding to approximately $120 million.

BioSpace
Oct 16th, 2025
Peptilogics Raises $78 Million to Advance Zaloganan Into Pivotal Trial

Zaloganan (PLG0206) enters Phase 2/3 study for treating prosthetic joint infections (PJI)

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