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Transition Bio, Inc.

Updated Oct 27, 2026·Latest SEC filing Oct 25, 2024·Suggest an edit

About Transition Bio

Transition Bio is a private company based in Cambridge, Massachusetts, incorporated in 2020 in Delaware. It has reported $58,351,426 raised in three offerings on Form D since April 2022.

Funding Rounds (SEC Form D)

First saleFiled with SECAmount soldInvestorsAvg. checkTermsFiling
Oct 11, 2024Oct 25, 2024$13,265,426of $21.2M target8$1.6MEquityRule 506(b)Form D ↗
Dec 22, 2023Jan 10, 2024$6,000,000of $15.0M target5$1.2MDebt, OptionsRule 506(b)Form D ↗
Mar 24, 2022Apr 8, 2022amended Mar 7, 2023$39,086,000of $50.0M target22$1.7MEquityRule 506(b)Form D/A ↗1 earlier filing
Total, three offerings$58,351,426

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 Transition Bio's Form D filed Oct 25, 2024.

TK
KY
Kathy Yi
Director
RW
Robert Weeks
Director
GM
George Martin
Executive officer and director
AS
Al Sandrock
Director
SC
Samuel Cohen
Director
PM
Preet Makkar
Executive officer
PM
Paxton Major
Director

Earlier filings also listed Connor McDermott (director, last listed Jan 2024), Martin Kulander (executive officer, last listed Mar 2023) and Gregory Miller (chief executive officer and director, last listed Mar 2023).

Sources

  1. SECTransition Bio, Inc. Form D, filed Apr 8, 2022
  2. SECTransition Bio, Inc. filing history