Xenetic Biosciences's Major Strategic Shareholders Enter Into Long Term Lock-Up Agreements

LEXINGTON, Mass., Oct. 07, 2015 (GLOBE NEWSWIRE) -- Xenetic Biosciences, Inc. (OTCQB:XBIO) (the “Company”), a biopharmaceutical company focused on developing next-generation biologic drugs and novel oncology therapeutics, announces that several of its major shareholders including Baxalta Incorporated (NYSE:BXLT) (formerly Baxter Healthcare), SynBio LLC and Serum Institute of India Limited have entered into Lock-up Letter Agreements (the “Lock-up”). Under the Lock-up each of the shareholders has agreed to not sell any of its shares currently held before June 30, 2016 and then further to limit the sale of its shares in the Company for an additional six months (to December 2016) to a price of no less than $1.25 per share. The Lock-up covers more than 58% of the issued shares of the Company’s common stock.

“The signing of these lock-up agreements, which cover such an extended period of time and include a minimum price floor no less than $1.25 after June 30, 2016, demonstrates both the confidence our largest shareholders have in the Company but also in the clinical pipeline and in the strategy of the management team,” said M. Scott Maguire, Chief Executive Officer of Xenetic. “After adding in management’s personal equity stakes, Xenetic has approximately 66% of its outstanding shares in some form of no-sale obligation. Going forward, these commitments will be important for facilitating the Company’s move to a globally recognized stock exchange thereby creating a pathway to deliver the resources to drive our numerous candidates into clinical development.”

About Xenetic Biosciences

Xenetic Biosciences, Inc. is a biopharmaceutical company developing next-generation biologic drugs and novel oncology therapeutics. Xenetic’s proprietary drug technology platforms include PolyXen®, designed to develop next generation biologic drugs by extending the efficacy, safety and half-life of biologic drugs, and OncoHist™ for the development of novel oncology drugs focused on orphan indications.

Xenetic's lead product candidates include ErepoXen®, a polysialylated form of erythropoietin (EPO) for the treatment of anemia in pre-dialysis patients with chronic kidney disease, and OncoHist™, a novel recombinant human histone H1.3 molecule for the treatment of refractory Acute Myeloid Leukemia (AML) with potential to treat numerous other cancer indications. Xenetic is collaborating with Russian-based OJSC Pharmsynthez (who is an affiliate of a significant shareholder in Xenetic) and the Serum Institute of India to test additional drug candidates and to de-risk the development process with clinical data generated in Russia and India before Xenetic takes these candidates into the clinic in the Western markets.

Xenetic is also developing a broad pipeline of clinical candidates for next generation biologics and novel oncology therapeutics in a number of orphan disease indications. For more information, please visit the company's website at www.xeneticbio.com and connect on Twitter, LinkedIn, Facebook and Google+.

Xenetic is working together with Baxalta Incorporated (formerly Baxter Healthcare) to develop a novel series of polysialylated blood coagulation factors, including a next generation Factor VIII. This collaboration relies on the Xenetic’s PolyXen® technology to conjugate PSA to therapeutic blood-clotting factors, with the goal of improving the pharmacokinetic profile and extending the active life of these biologic molecules. Baxalta is one of the Company’s largest shareholders having invested in a number of rounds with the most recent investment of $10M last year. The agreement is an exclusive research, development and license agreement which grants Baxalta a worldwide, exclusive, royalty-bearing license to Xenetic's PSA patented and proprietary technology in combination with Baxalta's proprietary molecules designed for the treatment of blood and bleeding disorders. Under the agreement, Xenetic may receive regulatory and sales target payments for total potential milestone receipts of up to $100 million plus royalties on sales.

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