SPAC redemptions answer, in case anyone else was wondering. Had already searched for it over the weekend, but tweaked a few words and came across some articles with the answer. Redemption data is usually in an 8-k filed a few days before the merged company (with new ticker symbol) starts trading.
FWIW, redemptions have been running very high on both extensions and de-spac mergers. Generally, these days about 40-50% of spac investors just want their cash back:
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