Relativity Space either announces a sale for under $1bn or otherwise announces that it is closing down. Taking a down round at a valuation under $750m would count as well.

From Wikipedia:

In November 2020, Relativity Space announced its US$500 million Series D funding at a calculated US$2.3 billion valuation.[8] In June 2021 Relativity announced another US$650 million funding round led by Fidelity Investments at a valuation of US$4.2 billion, bringing its total funding to US$1.335 billion.[9] The funding will help the development of a partially reusable heavy-lift launch vehicle, the Terran R, targeting a first orbital launch no earlier than 2026.[10] Relativity Space has investors including Baillie Gifford, Blackrock, BOND, Coatue, Fidelity, General Catalyst, ICONIQ Capital, K5 Global, Mark Cuban, Playground Global, Social Capital, Tiger Global, Tribe Capital, and Y Combinator among others.[11]