From Guns.com:

“This announcement is the Biden Administration’s 44th tranche of equipment to be provided from DoD inventories for Ukraine since August 2021,” noted the Pentagon in a simple release. Besides “over 12 million rounds of small arms ammunition,” the withdrawal includes additional 155mm and 105mm artillery rounds, 120mm tank ammunition, as well as additional munitions for Patriot air defense systems and HIMARS rocket systems.

The running tally sheet of the more than $43 billion in American equipment transferred to Ukraine by the Biden administration since February 2022 includes “more than 300,000,000 rounds of small arms ammunition,” a figure first broached in June.