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Kepler Software, Inc.

Software for developers building AI agents and applications in TypeScript.

Updated Nov 10, 2026·Latest SEC filing May 15, 2026·Suggest an edit

About Mastra

Mastra is a private company based in San Francisco, California, incorporated in 2023 in Delaware. It has reported $36,164,297 raised in one offering on Form D since May 2026. Its chief executive is Samuel Bhagwat.

Funding Rounds (SEC Form D)

First saleFiled with SECAmount soldInvestorsAvg. checkTermsFiling
Mar 2, 2026May 15, 2026$36,164,297fully sold157$230KEquityRule 506(b)Form D ↗

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 Mastra's Form D filed May 15, 2026.

Sources

  1. SECKepler Software, Inc. filing history
  2. CompanyMastra terms of service