William Bonificio

About William Bonificio

Form D filings for Navigator Medicines in 2024 list William Bonificio as executive officer and promoter.

Form D filings also name William Bonificio as an executive officer and promoter at Memento Medicines and Lonestar Medicines.

William Bonificio first appears on SEC filings in 2024.

Experience

This experience comes from William Bonificio's profile and from SEC filings. For roles taken from filings, the years are when the filings name William Bonificio in the role, so the role may have started earlier or lasted longer.

Navigator Medicines, Inc. Current

Co-Founder and Chief Business Officer

2024 – Present · San Mateo, CA

Develops antibody treatments for people with inflammatory and autoimmune diseases.

SL

Sera Medicines, LLC Current

Co-Founder and Chief Business Officer

2023 – Present

Memento Medicines, Inc.

Executive officer and promoter

2026 · Boston, MA

Develops antibody therapies for people with retinal diseases.

LM

Lonestar Medicines, Inc.

Executive officer and promoter

2026 · Boston, MA

CB

Climb Bio

Co-Founder and Chief Business Officer

2024 – 2025

TB

Tenet Medicines (Acquired by Climb Bio)

Co-Founder and Chief Business Officer

2023 – 2024

VA

ValenzaBio

Chief Strategy Officer

2019 – 2023

IP

Imbria Pharmaceuticals

Head Of Strategy

2018 – 2020

SC

Shumway Capital

Analyst

2016 – 2018

RL

RA Capital Management, LLC

Associate

2015 – 2016

FV

Flagship Ventures

VentureLabs Fellow

2015

KI

Kaleido Biosciences, Inc.

Consultant

2015

HU

Harvard University

Ph.D. Graduate Student in Applied Physics

2009 – 2015

GE

GE

Early Identification Intern

2007 – 2009

NH

NYS Department of Health

Intern

2006

Key Colleagues at Startups

The people William Bonificio works with at each company, as listed on that company's latest Form D.

Sources

1. SECMemento Medicines, Inc. Form D, filed Jun 16, 2026
2. SECLonestar Medicines, Inc. Form D, filed Feb 23, 2026
3. SECNavigator Medicines, Inc. Form D, filed Sep 5, 2024