T2D3 OS: Funding Rounds, Investors & Leadership

About T2D3 OS

T2D3 OS is software for fractional chief marketing officers, who run marketing for other companies part time. It locks a client's ideal customer, buyer personas and messaging in one place. AI agents then draft content, follow-up and reports from that base, and a person approves the key decisions.

T2D3 Inc. is based in McKinney, Texas. T2D3 has 125 certified practitioners who run the method. Its plan costs $999 a month for five client workspaces. The team page names Stijn Hendrikse, who also co-founded the marketing agency Kalungi, and Chris Bair as founders.

Funding Rounds (SEC Form D)

First sale	Filed with SEC	Amount sold	Investors	Avg. check	Terms	Filing
Oct 31, 2026	Nov 2, 2026	$25,000of $1.0M target	1	$25,000	Simple Agreement for Future Equity (SAFE)Rule 506(c)	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.

Why Investors Backed T2D3 OS

T2D3 is an early company with little public information. It sells marketing software to fractional chief marketing officers, a group that serves many small B2B software clients at once. Its pitch is that one locked foundation of customer and messaging facts lets AI agents do routine marketing work. Its founder has run marketing and sales at several software companies.

What the product does

T2D3 OS stores a client's ideal customer, buyer personas, value claims and brand voice as a locked foundation. AI agents then write content, follow-ups and reports that cite that foundation. The product picks one of several AI models for each task, and a person approves the calls that change the story, such as pricing claims.

Progress so far

T2D3 has 125 certified practitioners who run the T2D3 method. Its plan costs $999 a month and covers five client workspaces and 35,000 AI credits. The site shows one customer quote, from a fractional marketing leader. The company has not published customer counts or revenue.

We wrote this summary from public statements by T2D3 OS and its investors. It is not investment advice.