Dennis M Durkin
CIK 1543789 · Chief Financial Officer · last filed 2026-09-28
Dennis M Durkin is a Chief Financial Officer who has filed 23 SEC Form 4 insider transactions across 4 companies since 2012. The most recent filing shows the insider had shares withheld for taxes covering $21.8K of ONON on Sep 28, 2026. Across all open-market trades the lifetime net is −$31.1M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $4.3M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
ATVI price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
3100 OCEAN PARK BLVD
SANTA MONICA, CA 90405
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| ONON | Director | 103,755 | $33.17 | $3.44M | $0 | 4 | 2026-09-28 |
| RBLX | Director | 16,409 | $54.37 | $892.2K | $0 | 2 | 2026-05-29 |
| SMARTSHEET INC (SMAR) Delisted | Director | — | $56.47 | — | $0 | 1 | 2022-08-05 |
| Activision Blizzard, Inc. (ATVI) Delisted | Chief Financial Officer | 318,246 | $94.42 | $30.05M | -$31.05M | 16 | 2021-04-01 |
Recent Filings
23 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-09-28 | ONON | Tax (F) | −723 | -$21.8K | EDGAR |
| 2026-09-23 | ONON | Grant (A) | +2,892 | $0 | EDGAR |
| 2026-06-24 | ONON | Grant (A) | +2,064 | $0 | EDGAR |
| 2026-05-29 | RBLX | Grant (A) | +5,185 | $0 | EDGAR |
| 2026-03-26 | ONON | Grant (A) | +2,008 | $0 | EDGAR |
| 2026-03-23 | RBLX | Grant (A) | +3,524 | $0 | EDGAR |
| 2022-08-05 | SMARTSHEET INC (SMAR) Delisted | Grant (A) | — | $0 | EDGAR |
| 2021-04-01 | Activision Blizzard, Inc. (ATVI) Delisted | Tax (F) | −86,598 | -$8.02M | EDGAR |
| 2020-08-31 | Activision Blizzard, Inc. (ATVI) Delisted | Mixed | — | -$3.59M | EDGAR |
| 2020-04-01 | Activision Blizzard, Inc. (ATVI) Delisted | Tax (F) | −45,670 | $0 | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.