Spencer Kirk
CIK 1300028 · Chief Executive Officer · last filed 2025-12-04
Spencer Kirk is a Chief Executive Officer who has filed 83 SEC Form 4 insider transactions across 1 company since 2007. The most recent filing, for EXR, was dated Dec 8, 2025. Across all open-market trades the lifetime net is −$272.4M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $23.5M across reported positions. 91 SEC filings were submitted jointly with Extra Space Storage Inc.
"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.
EXR 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
SALT LAKE CITY, UT 84121
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| EXR | Director | 145,391 | $161.41 | $23.47M | -$272.45M | 82 | 2025-12-04 |
Recent Filings
83 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-12-08 | EXR | Notice (144) | −62,000 | -$7.97M | EDGAR |
| 2025-12-04 | EXR | Gift (G) | −70,000 | $0 | EDGAR |
| 2025-05-23 | EXR | Grant (A) | +1,375 | $199.9K | EDGAR |
| 2024-12-16 | EXR | Gift (G) | −6,775 | $0 | EDGAR |
| 2024-05-28 | EXR | Grant (A) | +1,402 | $200.0K | EDGAR |
| 2023-05-26 | EXR | Grant (A) | +1,093 | $160.1K | EDGAR |
| 2022-05-27 | EXR | Grant (A) | +928 | $160.0K | EDGAR |
| 2022-03-04 | EXR | Sell (S) | — | $0 | EDGAR |
| 2021-12-06 | EXR | Gift (G) | −50,000 | -$10.17M | EDGAR |
| 2021-08-18 | EXR | Mixed | −244,000 | -$42.80M | 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.