In general, if anyone wants to go through all the recent 8-K filings, this is what SEC EDGAR is for. Here's a link that'll bring up all recent 8-K filings by date and time, descending:
https://www.sec.gov/cgi-bin/browse-edgar?action=getcurrent&d...
In general, I would expect a ton of 8-Ks on Monday the 13th for companies to release information on their exposure to SIVB, particularly if their exposure is minor or non-existent.