every quarterly cydy 10Q has a paragraph on invent
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so every quarter cydy reports not only the value of the leronlimab at samsung but also the stage of manufacturing at which the leronlimab existed at the end of the quarter.
round about june 2020, if memory serves, you can see that samsung stopped progressing inventory from work-in-progress to finished goods.
its easy to observe this in each 10q. just open the file and search for "inventory" or maybe "work-in-progress". its really easy to find. typically a small table and a few sentences of description.