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SEC Form 4 research

CoreSite Realty Corp insider transactions

Inspect CoreSite Realty Corp's public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0001490892
Reporting owners
61
Officers and directors
17
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

Show the table · 0 rows, 7 columns

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No records are available for this view.

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Show the table · 20 rows, 3 columns

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Bair Christopher M.00014982272
Dunn David W.00014982292
Finnin Jeffrey S0001325462106
Font Juan000173355322
Haggard Billie R.000149822211
Hatzenbuehler Anthony00017781375
Jones Mark R000173357127
Kaiser Maile000174803216
Koehler Michael R00014286533
KRUSKO ALEKSANDRA00018491633
McCandless Derek000151564866
Price Chuck D.00014982181
Ray Thomas M.000149823116
Rockwood Robert K.00014982287
Smith Steven James000159876351
Szurek Paul E.000149857723
Thompson John David000142389153
Tobin Dominic M.000149822433
Warren Brian000165330961
WILSON DAVID A00012429192
Bair Christopher M. ↗Dunn David W. ↗Finnin Jeffrey S ↗Font Juan ↗Haggard Billie R. ↗Hatzenbuehler Anthony ↗Jones Mark R ↗Kaiser Maile ↗Koehler Michael R ↗KRUSKO ALEKSANDRA ↗McCandless Derek ↗Price Chuck D. ↗Ray Thomas M. ↗Rockwood Robert K. ↗Smith Steven James ↗Szurek Paul E. ↗Thompson John David ↗Tobin Dominic M. ↗Warren Brian ↗WILSON DAVID A ↗

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.