| Balance Sheets | 2026-03-31 | 2025-12-31 | 2025-09-30 | 2025-06-30 |
|---|---|---|---|---|
| Cash and cash equivalents | 140,265 | 148,515 | 147,088 | 213,651 |
| Restricted cash | 39,000 | 56,597 | 79,206 | 93,074 |
| Accounts receivable, net of allowance for credit losses of 5,271 and 4,610, respectively | 91,096 | 88,050 | 95,853 | 95,127 |
| Due from t-mobile, transition services agreement | NaN | 119 | 231 | 119 |
| Due from t-mobile, ip transit services agreement, current portion, net of discount of 8,695 and 10,401, respectively | 91,305 | 89,599 | 87,924 | 86,280 |
| Prepaid expenses and other current assets | 68,610 | 67,701 | 69,467 | 72,720 |
| Total current assets | 430,276 | 450,581 | 479,769 | 560,971 |
| Property and equipment | 3,696,974 | 3,642,906 | 3,584,540 | 3,546,033 |
| Accumulated depreciation and amortization | 1,964,092 | 1,921,832 | 1,871,828 | 1,820,651 |
| Total property and equipment, net | 1,732,882 | 1,721,074 | 1,712,712 | 1,725,382 |
| Right-of-use leased assets | 303,051 | 310,523 | 318,701 | 325,681 |
| Ipv4 intangible asset | 458,000 | 458,000 | 458,000 | 458,000 |
| Other intangible assets, net | 10,813 | 11,251 | 11,699 | 12,147 |
| Deposits and other assets | 31,179 | 34,834 | 31,147 | 29,809 |
| Due from t-mobile, ip transit services agreement, net of discount of 869 and 2,255, respectively | 65,798 | 89,412 | 112,584 | 135,323 |
| Due from t-mobile, purchase agreement, net of discount of 3,548 and 4,006, respectively | 24,567 | 24,109 | 23,659 | 23,218 |
| Total assets | 3,056,566 | 3,099,784 | 3,148,271 | 3,270,531 |
| Accounts payable | 36,095 | 30,571 | 28,390 | 49,169 |
| Accrued and other current liabilities | 112,345 | 109,582 | 129,021 | 116,653 |
| Due to t-mobile - transition services agreement | NaN | NaN | 18 | 9 |
| Current maturities, operating lease liabilities | 53,665 | 54,576 | 55,127 | 50,932 |
| Finance lease obligations, current maturities | 23,967 | 26,112 | 24,990 | 26,523 |
| Total current liabilities | 226,072 | 220,841 | 237,546 | 243,286 |
| Secured notes-Senior Secured Notes Due2032 | 598,043 | 597,980 | 597,918 | 597,857 |
| Senior unsecured 2027 notes, net of unamortized debt costs of 1,034 and 1,236, respectively, and discounts of 3,633 and 4,344, respectively-Senior Unsecured2027Notes | 745,333 | 744,420 | 743,523 | 742,644 |
| Secured notes-Secured Ipv4Address Revenue Notes | 372,061 | 371,537 | 371,023 | 370,520 |
| Operating lease liabilities, net of current maturities | 263,698 | 269,753 | 278,761 | 298,515 |
| Finance lease obligations, net of current maturities | 604,981 | 597,239 | 576,851 | 578,634 |
| Deferred income tax liabilities | 321,724 | 333,294 | 351,544 | 362,464 |
| Other long-term liabilities | 28,816 | 28,568 | 30,275 | 29,943 |
| Total liabilities | 3,160,728 | 3,163,632 | 3,187,441 | 3,223,863 |
| Common stock, 0.001 par value 75,000,000 shares authorized 50,077,663 and 50,062,158 shares issued and outstanding, respectively | 50 | 50 | 49 | 49 |
| Additional paid-in capital | 651,538 | 643,256 | 637,710 | 632,702 |
| Accumulated other comprehensive (loss) income | -6,327 | 1,428 | -1,432 | -1,196 |
| Accumulated deficit | -749,423 | -708,582 | -675,497 | -584,887 |
| Total stockholders' deficit | -104,162 | -63,848 | -39,170 | 46,668 |
| Total liabilities and stockholders' deficit | 3,056,566 | 3,099,784 | 3,148,271 | 3,270,531 |
COGENT COMMUNICATIONS HOLDINGS, INC. (CCOI)
COGENT COMMUNICATIONS HOLDINGS, INC. (CCOI)