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Protego Biopharma, Inc.

Updated Oct 29, 2026·Latest SEC filing Dec 3, 2025·Suggest an edit

About Protego Biopharma

Protego Biopharma is a private company based in San Diego, California. It has reported $84,989,544 raised in three offerings on Form D since December 2019. Its chief executive is Brent Warner.

Funding Rounds (SEC Form D)

First saleFiled with SECAmount soldInvestorsAvg. checkTermsFiling
Oct 17, 2025Dec 3, 2025$32,942,190of $130.4M target18$1.8MEquityRule 506(b)Form D ↗
Oct 19, 2021Oct 28, 2021$51,047,342fully sold6$8.5MEquityRule 506(b)Form D ↗
Dec 6, 2019Dec 17, 2019$1,000,012fully sold3$333KEquity, Options, Securities on exerciseRule 504, Rule 506(b), 4a5Form D ↗
Total, three offerings$84,989,544

First sale is the date the first investor in the offering committed to invest. Companies must file Form D within 15 days of that date, so filing dates run later.

Leadership Team

Executive officers and directors listed on Protego Biopharma's Form D filed Dec 3, 2025.

TL
Tim Lohoff
Director
EH
HP
Hank Petrassi
Executive officer
LB
Laura Brass
Director
JK
BW
Brent Warner
Chief Executive Officer and director
SC
Shelley Chu
Director
HK
Helen Kim
Director

Earlier filings also listed Richard Labaudiniere (chief executive officer and director, last listed Oct 2021), Jeffrey Kelly (director, last listed Oct 2021) and Xin Jiang (president & ceo, last listed Dec 2019).

Sources

  1. SECProtego Biopharma, Inc. filing history