Corteva, Inc. (CTVA) made 662 filings in its most recent EDGAR window (2018-10-18 to 2026-10-07) — about 82 routine filings per year once routine debt and shelf offerings are excluded. 454 of the filings are insider forms (Form 4: 412, Form 3: 42, Form 5: 0), i.e. 68.6% of routine filings.
Of the 662 filings in this window, 6 (0.9%) are routine debt or shelf offerings (form 424B*, FWP, S-3*), which are excluded from the routine rate below because large issuers generate them continuously.