Dermot Mark Durcan
CIK 1202358 · Chief Executive Officer · last filed 2026-06-22
Dermot Mark Durcan is a Chief Executive Officer who has filed 104 SEC Form 4 insider transactions across 7 companies since 2007. The most recent filing shows the insider bought $1.1M of COR on Jun 22, 2026. Across all open-market trades the lifetime net is +$2.5M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $1.54B across reported positions. 31 SEC filings were submitted jointly with AMERISOURCEBERGEN CORP.
"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.
COR 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
C/O ADVANCED MICRO DEVICES, INC.
SANTA CLARA, CA 95054
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| COR | Director | 31,767 | $337.52 | $10.72M | $2.27M | 6 | 2026-06-22 |
| AMD | Director | — | $447.57 | — | $0 | 8 | 2024-05-10 |
| Cencora, Inc. (ABC) Delisted | Director | 18,730 | $179.98 | $3.37M | $301.3K | 24 | 2023-03-13 |
| Veoneer, Inc. (VNE) Delisted | Director | 25,911 | $36.95 | $957.4K | $0 | 2 | 2021-05-11 |
| MU | Chief Executive Officer | 2,213,953 | $692.20 | $1.53B | -$24.0K | 56 | 2016-11-09 |
| Freescale Semiconductor, Ltd. (FSL) Delisted | Director | 11,663 | — | — | $0 | 2 | 2015-06-09 |
| MWI Veterinary Supply, Inc. (MWIV) Delisted | Director | 1,000 | — | — | $0 | 2 | 2015-02-25 |
Recent Filings
104 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-06-22 | COR | Buy (P) | +4,000 | $1.10M | EDGAR |
| 2026-05-28 | COR | Buy (P) | +4,000 | $1.07M | EDGAR |
| 2026-03-09 | COR | Grant (A) | +905 | $325.1K | EDGAR |
| 2025-03-10 | COR | Grant (A) | +986 | $0 | EDGAR |
| 2024-05-29 | COR | Buy (P) | +500 | $109.3K | EDGAR |
| 2024-05-10 | AMD | Grant (A) | — | $0 | EDGAR |
| 2024-03-13 | COR | Mixed | +2,646 | $0 | EDGAR |
| 2023-05-22 | AMD | Grant (A) | — | $0 | EDGAR |
| 2023-03-13 | Cencora, Inc. (ABC) Delisted | Grant (A) | +1,667 | $0 | EDGAR |
| 2023-03-07 | Cencora, Inc. (ABC) Delisted | Exer (M) | +2,012 | $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.