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SEC Form 4 research

COGENT COMMUNICATIONS HOLDINGS, INC. insider transactions

Inspect COGENT COMMUNICATIONS HOLDINGS, INC.'s public SEC insider acquisitions and sales, reporting owners and source receipts.

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

Issuer CIK
0001158324
Reporting owners
39
Officers and directors
21
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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.

Read one actual disclosure before using it

Show the table · 1 row, 7 columns

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2026-09-302026-09-30Montagner MarcA3,445$0Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-09-30 and its public availability date is 2026-09-30. Subtracting those calendar dates gives 0 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC accession 0001456823-26-000010 ↗SEC accession 0001790695-26-000016 ↗SEC accession 0001923830-26-000008 ↗

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 · 9 rows, 7 columns

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2026-09-302026-09-30Montagner MarcA3,445$0Not reported
2026-09-302026-09-30Kennedy Sheryl LynnA3,445$0Not reported
2026-09-302026-09-30Howell Deneen CA3,445$0Not reported
2026-09-302026-09-30Howard Eve NA3,445$0Not reported
2026-09-302026-09-30FERGUSON Lewis HA3,445$0Not reported
2026-09-302026-09-30de Sa PaulA3,445$0Not reported
2026-09-302026-09-30BROOKS STEVEN DA3,445$0Not reported
2026-09-152026-09-15KILMER HENRY WS2,400$9.21Not reported
2026-09-042026-09-02WEED THADDEUS GERARDS4,850$9.37Not reported

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

Inspect all 26 displayed rows: Officers and directors in the directory

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Wallace Sean R.00018110505
Kennedy Sheryl Lynn000179069523
FERGUSON Lewis H000139564333
KUMMER RAYMOND B000116698299
Bath Blake000137853018
Montagner Marc000145682330
BERTRAND JEAN JACQUES00012838978
BEURY ROBERT N JR0001166979163
BROOKS STEVEN D000122788219
BUBECK JAMES000165429845
Chang John B.000177567229
GLASSMEYER EDWARD F00011671976
Harrison R Reed000129641882
Howard Eve N00019336941
Kapp David Allen00019400743
Karnes Jeffrey000133201562
KILMER HENRY W000159981278
LIEBHABER RICHARD000118238110
MARGALIT EREL N0001175470132
ONEILL TIMOTHY G0001166934146
Ortega Ernest00014294445
PETERSON KENNETH D JR000118107531
SCHAEFFER DAVE000116697663
SCHLEIFER MARK A000116694035
WEED THADDEUS GERARD0001166978139
WEINGARTEN TIM000126867742
Wallace Sean R. ↗Kennedy Sheryl Lynn ↗FERGUSON Lewis H ↗KUMMER RAYMOND B ↗Bath Blake ↗Montagner Marc ↗BERTRAND JEAN JACQUES ↗BEURY ROBERT N JR ↗BROOKS STEVEN D ↗BUBECK JAMES ↗Chang John B. ↗GLASSMEYER EDWARD F ↗Harrison R Reed ↗Howard Eve N ↗Kapp David Allen ↗Karnes Jeffrey ↗KILMER HENRY W ↗LIEBHABER RICHARD ↗MARGALIT EREL N ↗ONEILL TIMOTHY G ↗Ortega Ernest ↗PETERSON KENNETH D JR ↗SCHAEFFER DAVE ↗SCHLEIFER MARK A ↗WEED THADDEUS GERARD ↗WEINGARTEN TIM ↗

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.