EDGAR issuer names are messy (ALL-CAPS, trailing /DE/ /NV state tags, entity
suffixes) and render badly in a personalized subject line. Added:
display_name -- title-cased, state-tag-stripped, suffix kept
short_name -- suffix dropped too, for a punchy subject merge field
e.g. 'WINDTREE THERAPEUTICS INC /DE/' -> 'Windtree Therapeutics'
So 'Is DEXIT in the cards for {{short_name}}?' renders clean. ~98% of short_names
are <=40 chars (survive mobile subject truncation).
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