Study
How much notice do companies give before a CFO change takes effect?
Computed October 23, 2026 from the verified record · Download this table (CSV)
0 days
median gap from 8-K filing to effective date
Of 418 verified moves, 381 give an effective date to the day. 198 of them (52%) took effect on or before the day the 8-K was filed. The median gap from filing to effective date is 0 days, and 25 days among the 183 that took effect after filing. 37 records do not give a day-precision effective date and are left out.
The counts
| Days from filing to effective date | All moves | Appointment | Departure | Interim | Transition |
|---|---|---|---|---|---|
| Effective before the filing date | 132 | 40 | 15 | 34 | 43 |
| Effective on the filing date | 66 | 7 | 4 | 28 | 27 |
| 1 to 7 days after filing | 33 | 5 | 4 | 9 | 15 |
| 8 to 30 days after filing | 73 | 11 | 10 | 16 | 36 |
| 31 to 90 days after filing | 52 | 4 | 14 | 5 | 29 |
| 91 days or more after filing | 25 | 0 | 12 | 0 | 13 |
| Base: day-precision records | 381 | 67 | 59 | 92 | 163 |
| Median days, filing to effective | 0 | -1 | 24 | 0 | 6 |
| Not established (no day-precision effective date) | 37 | 7 | 23 | 2 | 5 |
Download the first table as CSV · Free to use with attribution to CFO Tribune and a link to https://cfotribune.com.
How this is computed
- Days are counted from the 8-K's filing date (the filed field) to the effective date the filing gives, in calendar days.
- Only records whose effective date is given to the day count. A record with a month-precision or unstated effective date is not established and is left out of every figure except the not established row.
- A negative count means the change took effect before the 8-K was filed; Item 5.02 allows four business days to file.
- Only verified records count: drafts never build. A share whose base is zero is shown as not established, never as 0%.
What the record cannot tell you
- The effective date is the one the filing states. A later amendment that moves the date is reflected only if the record was corrected.
- The record does not say when the board decided, or when the officer gave notice, so this is not the officer's own notice period.
- The record holds the filings CFO Tribune has read and verified, not every filing made. Each figure describes that record only.
Related studies
How often do companies name an interim CFO, and how long until a permanent one?22.5% of verified moves name an interim CFO
When do companies file CFO changes?Tuesday is the most common filing day