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Thetis Pharmaceuticals LLC

Develops oral medicines for people with inflammatory bowel disease and solid tumors.

Updated Nov 9, 2026·Latest SEC filing Oct 13, 2026·Suggest an edit

About Thetis Pharmaceuticals

Thetis Pharmaceuticals is a private company based in Deep River, Connecticut. It has reported $15,194,645 raised in seven offerings on Form D since August 2011. Its chief executive is Gary Mathias.

Funding Rounds (SEC Form D)

First saleFiled with SECAmount soldInvestorsAvg. checkTermsFiling
Aug 13, 2026Oct 13, 2026$560,300of $1.0M target10$56,030Debt, OptionsRule 506(b)Form D ↗
Jun 27, 2022Jul 11, 2022$1,098,320of $2.0M target9$122KDebt, OptionsRule 506(b)Form D ↗
Aug 6, 2018Aug 7, 2018$795,800of $2.1M target8$99,475Debt, Options, Convertible Promissory NotesRule 506(b)Form D ↗
Jun 17, 2016Jun 27, 2016amended Jan 17, 2017$4,105,495of $8.0M target52$78,952Equity, OptionsRule 506(b)Form D/A ↗1 earlier filing
Jan 29, 2016Feb 11, 2016$1,434,000of $4.0M target16$89,625Debt, OptionsRule 506(b)Form D ↗
Dec 3, 2012Dec 18, 2012$5,665,730of $7.4M target32$177KEquity06Form D ↗
Aug 11, 2011Aug 26, 2011$1,535,000of $1.6M target14$109KDebt, Options, Securities on exercise06Form D ↗
Total, seven offerings$15,194,645

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 Thetis Pharmaceuticals's Form D filed Oct 13, 2026.

GM
Gary Mathias
Chief Executive Officer and director
DW
FC
DC
David Cook
Director

Earlier filings also listed Cynthia Green (director, last listed Jul 2022), David Wurzer (director, last listed Aug 2018), David Wurzer (director, last listed Feb 2016), Alan Mendelson (director, last listed Feb 2016) and Michael Carter (secretary, last listed Dec 2012).

Sources

  1. SECThetis Pharmaceuticals LLC Form D, filed Jun 27, 2016
  2. SECThetis Pharmaceuticals LLC filing history
  3. ResearchSBIR company profile