M3-Brigade Acquisition VI is a SPAC — a publicly traded shell company with no operations whose sole purpose is to find and merge with a private business. The company raised $345M in its August 2025 IPO, with proceeds held in a trust invested in U.S. government securities until a deal closes. The SPAC is co-sponsored by M3 Partners, a financial advisory firm, and Brigade Capital Management, a credit-focused investment manager with ~$31B in AUM. The SPAC has no industry mandate but has flagged cryptocurrency and blockchain as areas of particular interest. The sponsor's economic incentive comes from the "promote" — founders received 8.6M shares for just $25,000, which could be worth significantly more if a deal closes. Public shareholders paid $10/unit at IPO, with each unit including one Class A share and one-third of a warrant exercisable at $11.50. If a deal closes, public shareholders can hold shares in the combined company or redeem at roughly $10/share plus interest. If no deal closes within 24 months, the trust is liquidated and public shareholders recover their ~$10/share, while warrants expire worthless. The sponsors have organized six prior SPACs together, of which five reached the IPO stage but only two completed business combinations — one creating IEA, a renewable energy construction company later acquired by MasTec for ~$1.1B, and one merging with Greenfire Resources at a ~$950M valuation.