SER SERINA THERAPEUTICS INC Investments/Divestments 8-K Filing 2023 - Investment and License Agreement AgeX drew $500,000 of its credit available under the Secured Convertible Promissory Note with Juvenescence. Serina Therapeutics announced a license agreement with Pfizer for its POZ polymer technology.Get access to all SEC 8-K filings of the SERINA THERAPEUTICS INC