EFFECT for an resale S-1 is technically not new dilution as the shares already existed. For resales covering warrants/convertibles, those securities will be shown on DT in their respective sections. Resale shares may have large price impact if the following is true:
Number of shares being sold is high relative to float. e.g. a <5m float stock receives pressure from >10m shares being sold
No lock-up preventing the shares from being sold
Deducible that the selling shareholders are looking to sell immediately
Deep in the money for warrants/convertibles.
424B3s are filed whenever a S-1 resale registration receives EFFECT. They will also be filed again for the same resale S-1 whenever a new public disclosure is made such as an 8-k or 10-q. In these instances the new 424b3 filings are not relevant as they are simply mandatory disclosures.