Stock Scorer

Cogent Communications Group Inc (CCOI) · Insider trading

What Cogent Communications Group's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.

Bought, 12 months
$0
0 insiders, 0 trades
Sold, 12 months
$995,500
4 insiders, 0% under a plan
Net, 12 months
−$995,500
bought less sold
Latest filing
2026-09-30
filings read to 2026-10-20

Bought and sold at the market, by month

Two years. Purchases above the line, sales below, in dollars.

2024-11: $6.17M sold 2024-12: $1.06M sold 2025-01 2025-03: $5.15M sold 2025-05: $16.34M sold 2025-06: $34.02M sold 2025-07 2025-08: $82.60M sold 2025-09: $269,978 sold 2025-11: $51,216 sold 2025-12: $351,479 sold 2026-01 2026-03: $292,467 sold 2026-05: $110,534 sold 2026-06: $122,256 sold 2026-07 2026-09: $67,548 sold
Bought Sold Largest month: $82.60M

Who traded, two years

InsiderBoughtSold TradesLast tradeHolds after
Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT – $141.62M 40 2025-08-08 697,143
Weed Thaddeus GerardVICE PRESIDENT, CFO – $1.58M 10 2026-09-02 193,050
Kilmer Henry WVP OF NETWORK STRATEGY – $954,912 10 2026-09-15 36,200
Bubeck JamesCHIEF REVENUE OFFICER – $541,738 4 2025-06-04 55,142
Kennedy Sheryl LynnDirector – $538,836 7 2026-05-14 10,245
Bath BlakeDirector – $520,552 1 2024-11-21 10,000
Ferguson Lewis HDirector – $376,986 6 2026-05-28 21,094
Howard Eve NDirector – $287,070 1 2024-11-11 10,059
Chang John B.VP & CHIEF LEGAL OFFICER – $183,335 1 2024-11-12 69,300

Open-market purchases and sales

Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.

DateInsiderTradeShares PriceValueHolds afterFiling
2026-09-15 Kilmer Henry WVP OF NETWORK STRATEGY Sale 2,400 9.21 $22,104 36,200 Form 4
2026-09-02 Weed Thaddeus GerardVICE PRESIDENT, CFO Sale 4,850 9.37 $45,444 193,050 Form 4
2026-06-16 Weed Thaddeus GerardVICE PRESIDENT, CFO Sale 4,850 16.79 $81,432 197,900 Form 4
2026-06-15 Kilmer Henry WVP OF NETWORK STRATEGY Sale 2,400 17.01 $40,824 38,600 Form 4
2026-05-28 Ferguson Lewis HDirector Sale 2,800 20.36 $57,008 21,094 Form 4
2026-05-14 Kennedy Sheryl LynnDirector Sale 3,300 16.22 $53,526 10,245 Form 4
2026-03-06 Kilmer Henry WVP OF NETWORK STRATEGY Sale 2,400 23.35 $56,040 41,000 Form 4
2026-03-05 Weed Thaddeus GerardVICE PRESIDENT, CFO Sale 4,850 22.63 $109,756 202,750 Form 4
2026-03-05 Ferguson Lewis HDirector Sale 2,206 23.03 $50,804 20,449 Form 4
2026-03-05 Kennedy Sheryl LynnDirector Sale 3,300 22.99 $75,867 10,100 Form 4
2025-12-11 Weed Thaddeus GerardVICE PRESIDENT, CFO Sale 7,300 23.99 $175,127 88,200 Form 4
2025-12-08 Kilmer Henry WVP OF NETWORK STRATEGY Sale 4,800 19.79 $94,992 33,800 Form 4
2025-12-02 Ferguson Lewis HDirector Sale 4,000 20.34 $81,360 19,267 Form 4
2025-12-01 Kilmer Henry WVP OF NETWORK STRATEGY Sale 2,400 – – 38,600 Form 4
2025-11-11 Kennedy Sheryl LynnDirector Sale 2,400 21.34 $51,216 10,012 Form 4
2025-09-05 Kilmer Henry WVP OF NETWORK STRATEGY Sale 2,400 36.99 $88,776 36,200 Form 4
2025-09-02 Weed Thaddeus GerardVICE PRESIDENT, CFO Sale 4,900 36.98 $181,202 93,100 Form 4
2025-08-21 Kennedy Sheryl LynnDirector Sale 2,000 36.35 $72,700 10,017 Form 4
2025-08-08 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 818,909 27.50 $22.52M 697,143 Form 4
2025-08-07 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 1,840,669 32.60 $60.01M 1,516,052 Form 4
2025-06-16 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 45,000 47.14 $2.12M 3,381,721 Form 4
2025-06-16 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 25,000 47.05 $1.18M 3,356,721 Form 4
2025-06-13 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 45,000 47.42 $2.13M 3,436,721 Form 4
2025-06-13 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 10,000 47.34 $473,400 3,426,721 Form 4
2025-06-12 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 45,000 47.87 $2.15M 3,491,721 Form 4
2025-06-12 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 10,000 47.83 $478,300 3,481,721 Form 4
2025-06-11 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 45,000 48.55 $2.18M 3,546,721 Form 4
2025-06-11 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 10,000 48.35 $483,500 3,536,721 Form 4
2025-06-10 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 40,000 48.70 $1.95M 3,606,721 Form 4
2025-06-10 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 15,000 48.63 $729,450 3,591,721 Form 4
2025-06-09 Weed Thaddeus GerardVICE PRESIDENT, CFO Sale 4,900 48.04 $235,396 98,000 Form 4
2025-06-09 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 40,000 48.51 $1.94M 3,661,721 Form 4
2025-06-09 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 15,000 48.99 $734,850 3,646,721 Form 4
2025-06-06 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 50,000 47.78 $2.39M 3,731,721 Form 4
2025-06-06 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 30,000 47.78 $1.43M 3,701,721 Form 4
2025-06-06 Kilmer Henry WVP OF NETWORK STRATEGY Sale 2,400 47.95 $115,080 38,600 Form 4
2025-06-05 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 40,000 47.29 $1.89M 3,816,721 Form 4
2025-06-05 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 35,000 47.31 $1.66M 3,781,721 Form 4
2025-06-04 Bubeck JamesCHIEF REVENUE OFFICER Sale 2,000 47.50 $95,000 55,142 Form 4
2025-06-04 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 50,000 47.76 $2.39M 3,881,721 Form 4
40 more
2025-06-04 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 25,000 47.76 $1.19M 3,856,721 Form 4
2025-06-03 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 50,000 47.00 $2.35M 3,946,721 Form 4
2025-06-03 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 15,000 46.86 $702,900 3,931,721 Form 4
2025-06-02 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 50,000 46.38 $2.32M 4,011,721 Form 4
2025-06-02 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 15,000 46.13 $691,950 3,996,721 Form 4
2025-05-30 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 25,000 45.90 $1.15M 4,061,721 Form 4
2025-05-29 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 25,000 46.90 $1.17M 4,086,721 Form 4
2025-05-28 Ferguson Lewis HDirector Sale 1,100 47.57 $52,327 18,904 Form 4
2025-05-28 Weed Thaddeus GerardVICE PRESIDENT, CFO Sale 100 47.67 $4,767 102,900 Form 4
2025-05-28 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 20,000 47.41 $948,200 4,111,721 Form 4
2025-05-27 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 20,000 48.67 $973,400 4,131,721 Form 4
2025-05-23 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 25,000 46.93 $1.17M 4,151,721 Form 4
2025-05-22 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 25,000 46.27 $1.16M 4,176,721 Form 4
2025-05-21 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 40,000 46.81 $1.87M 4,201,721 Form 4
2025-05-20 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 15,000 49.96 $749,400 4,241,721 Form 4
2025-05-16 Weed Thaddeus GerardVICE PRESIDENT, CFO Sale 0 – – 103,000 Form 4/A
2025-05-16 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 15,000 51.00 $765,000 4,256,721 Form 4
2025-05-15 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 40,000 50.38 $2.02M 4,271,721 Form 4
2025-05-14 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 30,000 50.64 $1.52M 4,311,721 Form 4
2025-05-13 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 42,628 50.45 $2.15M 4,341,721 Form 4
2025-05-13 Kennedy Sheryl LynnDirector Sale 1,450 50.19 $72,776 10,049 Form 4
2025-05-12 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 11,372 50.10 $569,737 4,384,349 Form 4
2025-03-12 Ferguson Lewis HDirector Sale 956 69.37 $66,318 18,652 Form 4
2025-03-07 Kilmer Henry WVP OF NETWORK STRATEGY Sale 2,400 72.57 $174,168 41,000 Form 4
2025-03-04 Bubeck JamesCHIEF REVENUE OFFICER Sale 2,000 71.67 $143,340 57,142 Form 4
2025-03-04 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 60,000 71.77 $4.31M 4,444,038 Form 4
2025-03-03 Weed Thaddeus GerardVICE PRESIDENT, CFO Sale 4,900 72.06 $353,094 103,000 Form 4
2025-03-03 Kennedy Sheryl LynnDirector Sale 1,425 72.96 $103,968 10,147 Form 4
2024-12-12 Kilmer Henry WVP OF NETWORK STRATEGY Sale 4,800 75.61 $362,928 33,800 Form 4
2024-12-09 Bubeck JamesCHIEF REVENUE OFFICER Sale 1,920 76.60 $147,072 49,542 Form 4
2024-12-02 Weed Thaddeus GerardVICE PRESIDENT, CFO Sale 4,800 81.58 $391,584 88,500 Form 4
2024-12-02 Bubeck JamesCHIEF REVENUE OFFICER Sale 1,920 81.42 $156,326 51,462 Form 4
2024-12-01 Kilmer Henry WVP OF NETWORK STRATEGY Sale 2,400 – – 38,600 Form 4
2024-11-26 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 24,364 82.69 $2.01M 4,248,038 Form 4
2024-11-25 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Sale 35,636 83.76 $2.98M 4,272,402 Form 4
2024-11-21 Bath BlakeDirector Sale 6,220 83.69 $520,552 10,000 Form 4
2024-11-18 Ferguson Lewis HDirector Sale 846 81.76 $69,169 18,354 Form 4
2024-11-12 Chang John B.VP & CHIEF LEGAL OFFICER Sale 2,280 80.41 $183,335 69,300 Form 4
2024-11-11 Howard Eve NDirector Sale 3,500 82.02 $287,070 10,059 Form 4
2024-11-11 Kennedy Sheryl LynnDirector Sale 1,350 80.58 $108,783 10,318 Form 4

Grants, exercises and other transactions

Pay, tax and paperwork rather than a choice to trade at the market price. Two years.

80 × grant or award18 × gift3 × returned to the company
Show them
DateInsiderWhatShares PriceHolds afterFiling
2026-09-30 Brooks Steven DDirector Grant or award A +3,445 – 62,138 Form 4
2026-09-30 Ferguson Lewis HDirector Grant or award A +3,445 – 27,984 Form 4
2026-09-30 Montagner MarcDirector Grant or award A +3,445 – 103,287 Form 4
2026-09-30 Kennedy Sheryl LynnDirector Grant or award A +3,445 – 17,135 Form 4
2026-09-30 de Sa PaulDirector Grant or award A +3,445 – 37,237 Form 4
2026-09-30 Howell Deneen CDirector Grant or award A +3,445 – 35,775 Form 4
2026-09-30 Howard Eve NDirector Grant or award A +3,445 – 30,751 Form 4
2026-06-30 Brooks Steven DDirector Grant or award A +3,445 – 58,693 Form 4
2026-06-30 de Sa PaulDirector Grant or award A +3,445 – 33,792 Form 4
2026-06-30 Howell Deneen CDirector Grant or award A +3,445 – 32,330 Form 4
2026-06-30 Howard Eve NDirector Grant or award A +3,445 – 27,306 Form 4
2026-06-30 Ferguson Lewis HDirector Grant or award A +3,445 – 24,539 Form 4
2026-06-30 Montagner MarcDirector Grant or award A +3,445 – 99,842 Form 4
2026-06-30 Kennedy Sheryl LynnDirector Grant or award A +3,445 – 13,690 Form 4
2026-05-04 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Grant or award A +1,000,000 – 1,609,143 Form 4
2026-05-04 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Gift G −1,000,000 – 609,143 Form 4
2026-05-04 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Gift G +1,000,000 – 1,258,990 Form 4
2026-04-01 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Returned to the company D −58,667 – 638,476 Form 4
2026-04-01 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Gift G −29,333 – 609,143 Form 4
2026-04-01 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Gift G +29,333 – 258,990 Form 4
2026-03-31 Brooks Steven DDirector Grant or award A +3,445 – 55,248 Form 4
2026-03-31 Ferguson Lewis HDirector Grant or award A +3,445 – 23,894 Form 4
2026-03-31 Montagner MarcDirector Grant or award A +3,445 – 96,397 Form 4
2026-03-31 Kennedy Sheryl LynnDirector Grant or award A +3,445 – 13,545 Form 4
2026-03-31 de Sa PaulDirector Grant or award A +3,445 – 30,347 Form 4
2026-03-31 Howell Deneen CDirector Grant or award A +3,445 – 28,885 Form 4
2026-03-31 Howard Eve NDirector Grant or award A +3,445 – 23,861 Form 4
2025-12-31 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Grant or award A +229,657 – 926,800 Form 4
2025-12-31 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Gift G −229,657 – 697,143 Form 4
2025-12-31 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Gift G +229,657 – 229,657 Form 4
2025-12-31 Weed Thaddeus GerardVICE PRESIDENT, CFO Grant or award A +19,400 – 107,600 Form 4
2025-12-31 Weed Thaddeus GerardVICE PRESIDENT, CFO Grant or award A +100,000 – 207,600 Form 4
2025-12-31 Brooks Steven DDirector Grant or award A +3,388 – 51,803 Form 4
2025-12-31 Ferguson Lewis HDirector Grant or award A +3,388 – 22,655 Form 4
2025-12-31 Montagner MarcDirector Grant or award A +3,388 – 92,952 Form 4
2025-12-31 Kilmer Henry WVP OF NETWORK STRATEGY Grant or award A +9,600 – 43,400 Form 4
2025-12-31 Chang John B.VP & CHIEF LEGAL OFFICER Grant or award A +9,600 – 88,847 Form 4
2025-12-31 Chang John B.VP & CHIEF LEGAL OFFICER Grant or award A +100,000 – 188,847 Form 4
2025-12-31 Kennedy Sheryl LynnDirector Grant or award A +3,388 – 13,400 Form 4
2025-12-31 de Sa PaulDirector Grant or award A +3,388 – 26,902 Form 4
2025-12-31 Howell Deneen CDirector Grant or award A +3,388 – 25,440 Form 4
2025-12-31 Howard Eve NDirector Grant or award A +3,388 – 20,416 Form 4
2025-12-31 Harris Mark AndrewVP & Chief Revenue Officer Grant or award A +5,000 – 10,168 Form 4
2025-12-31 Harris Mark AndrewVP & Chief Revenue Officer Grant or award A +100,000 – 110,168 Form 4
2025-12-01 Weed Thaddeus GerardVICE PRESIDENT, CFO Grant or award A +2,400 – 95,500 Form 4
2025-12-01 Chang John B.VP & CHIEF LEGAL OFFICER Grant or award A +2,400 – 79,247 Form 4
2025-09-30 Ferguson Lewis HDirector Grant or award A +2,395 – 23,267 Form 4
2025-09-30 de Sa PaulDirector Grant or award A +2,395 – 23,514 Form 4
2025-09-30 Brooks Steven DDirector Grant or award A +2,395 – 48,415 Form 4
2025-09-30 Montagner MarcDirector Grant or award A +2,395 – 89,564 Form 4
2025-09-30 Kennedy Sheryl LynnDirector Grant or award A +2,395 – 12,412 Form 4
2025-09-30 Howell Deneen CDirector Grant or award A +2,395 – 22,052 Form 4
2025-09-30 Howard Eve NDirector Grant or award A +2,395 – 17,028 Form 4
2025-09-02 Harris Mark AndrewVP & Chief Revenue Officer Grant or award A +668 – 5,168 Form 4
2025-06-30 de Sa PaulDirector Grant or award A +1,968 – 21,119 Form 4
2025-06-30 Ferguson Lewis HDirector Grant or award A +1,968 – 20,872 Form 4
2025-06-30 Howell Deneen CDirector Grant or award A +1,968 – 19,657 Form 4
2025-06-30 Kennedy Sheryl LynnDirector Grant or award A +1,968 – 12,017 Form 4
2025-06-30 Montagner MarcDirector Grant or award A +1,968 – 87,169 Form 4
2025-06-30 Brooks Steven DDirector Grant or award A +1,968 – 46,020 Form 4
2025-06-30 Howard Eve NDirector Grant or award A +1,968 – 14,633 Form 4
2025-06-02 Chang John B.VP & CHIEF LEGAL OFFICER Gift G −398 – 76,847 Form 4
2025-05-13 Chang John B.VP & CHIEF LEGAL OFFICER Gift G −756 – 77,245 Form 4
2025-05-13 Chang John B.VP & CHIEF LEGAL OFFICER Gift G +504 – 3,089 Form 4
2025-04-10 Chang John B.VP & CHIEF LEGAL OFFICER Gift G −357 – 78,001 Form 4
2025-04-04 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Returned to the company D −48,317 – 4,395,721 Form 4
2025-03-31 Howell Deneen CDirector Grant or award A +1,352 – 17,689 Form 4
2025-03-31 Bath BlakeDirector Grant or award A +1,352 – 12,606 Form 4
2025-03-31 Brooks Steven DDirector Grant or award A +1,352 – 44,052 Form 4
2025-03-31 de Sa PaulDirector Grant or award A +1,352 – 19,151 Form 4
2025-03-31 Ferguson Lewis HDirector Grant or award A +1,352 – 20,004 Form 4
2025-03-31 Howard Eve NDirector Grant or award A +1,352 – 12,665 Form 4
2025-03-31 Kennedy Sheryl LynnDirector Grant or award A +1,352 – 11,499 Form 4
2025-03-31 Montagner MarcDirector Grant or award A +1,352 – 85,201 Form 4
2025-03-10 Chang John B.VP & CHIEF LEGAL OFFICER Gift G −357 – 78,358 Form 4
2025-03-05 Chang John B.VP & CHIEF LEGAL OFFICER Gift G −715 – 78,715 Form 4
2025-03-05 Chang John B.VP & CHIEF LEGAL OFFICER Gift G +715 – 2,585 Form 4
2025-01-21 Brooks Steven DDirector Gift G −299 – 42,700 Form 4
2025-01-14 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Grant or award A +84,000 – 4,408,038 Form 4
2025-01-14 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Grant or award A +96,000 – 4,504,038 Form 4
2025-01-09 Chang John B.VP & CHIEF LEGAL OFFICER Grant or award A +9,600 – 79,430 Form 4
2025-01-09 Weed Thaddeus GerardVICE PRESIDENT, CFO Grant or award A +19,400 – 107,900 Form 4
2025-01-09 Bubeck JamesCHIEF REVENUE OFFICER Grant or award A +9,600 – 59,142 Form 4
2025-01-09 Kilmer Henry WVP OF NETWORK STRATEGY Grant or award A +9,600 – 43,400 Form 4
2025-01-01 Brooks Steven DDirector Grant or award A +1,254 – 42,999 Form 4
2025-01-01 de Sa PaulDirector Grant or award A +1,254 – 17,799 Form 4
2025-01-01 Ferguson Lewis HDirector Grant or award A +1,254 – 19,608 Form 4
2025-01-01 Bath BlakeDirector Grant or award A +1,254 – 11,254 Form 4
2025-01-01 Howard Eve NDirector Grant or award A +1,254 – 11,313 Form 4
2025-01-01 Montagner MarcDirector Grant or award A +1,254 – 83,849 Form 4
2025-01-01 Howell Deneen CDirector Grant or award A +1,254 – 16,337 Form 4
2025-01-01 Kennedy Sheryl LynnDirector Grant or award A +1,254 – 11,572 Form 4
2024-12-18 Chang John B.VP & CHIEF LEGAL OFFICER Gift G −970 – 69,830 Form 4
2024-12-18 Chang John B.VP & CHIEF LEGAL OFFICER Gift G +485 – 935 Form 4
2024-12-18 Chang John B.VP & CHIEF LEGAL OFFICER Gift G +485 – 935 Form 4
2024-12-16 Schaeffer DaveDirector, CHAIRMAN, CEO, AND PRESIDENT Returned to the company D −20,000 75.88 4,228,038 Form 4
2024-12-04 Chang John B.VP & CHIEF LEGAL OFFICER Gift G −900 – 70,800 Form 4
2024-12-01 Kilmer Henry WVP OF NETWORK STRATEGY Grant or award A +2,400 – 38,600 Form 4/A
2024-12-01 Chang John B.VP & CHIEF LEGAL OFFICER Grant or award A +2,400 – 71,700 Form 4
2024-12-01 Weed Thaddeus GerardVICE PRESIDENT, CFO Grant or award A +2,400 – 93,300 Form 4
2024-12-01 Bubeck JamesCHIEF REVENUE OFFICER Grant or award A +2,400 – 53,382 Form 4

How to read it

Buy, sale
Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
Plan
A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
Holds after
The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
Value
Shares times the price the form reports, which is often an average over several fills on the day.

Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.

Cogent Communications Group's scores and multiples ›