"Pre-split" shares don't exist anymore. They were all reduced by the RS ratio of 1 new share for 750 old shares on March 3.
The new ticker symbol is PFMSD. The D is scheduled to be removed on March 31. Sam has said in a PR that those shares will get a new ticker symbol, SMFX.
This should all show up on FINRA Daily List the day before the ticker change.