| $158M | ||
| $148M | ||
| $100M | ||
| $27M | ||
| $21M | ||
| $16M |
Buys | $0 | 0 | 0 |
Sells | $995,481 | 15 | 100 |
| Kennedy Sheryl Lynn | director | 0 | $0 | 3 | $180,606 | $-180,606 |
| FERGUSON Lewis H | director | 0 | $0 | 3 | $189,153 | $-189,153 |
| KILMER HENRY W | VP OF NETWORK STRATEGY | 0 | $0 | 5 | $213,960 | $-213,960 |
| WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 0 | $0 | 4 | $411,762 | $-411,762 |
Cogent Communications Holdings, Inc., founded in 1999 and based in Washington, D.C., functions as a multinational provider of high-speed internet connectivity, private networking solutions, and data center co-location services. Its extensive reach covers clients across North America, Europe, Asia, South America, Australia, and Africa. The company delivers its core services, including rapid internet access and secure private networks, in two primary ways: directly to customers located within buildings physically connected to its network …
Over the last 12 months, insiders at Cogent Communications Holdings, Inc. have bought $0 and sold $995,481 worth of Cogent Communications Holdings, Inc. stock.
On average, over the past 5 years, insiders at Cogent Communications Holdings, Inc. have bought $537,440 and sold $42.06M worth of stock each year.
There was no buying activity among insiders over the last 12 months.
The last purchase of 10,000 shares for transaction amount of $526,130 was made by Montagner Marc (director) on 2024‑06‑11.
| 2026-09-15 | Sale | KILMER HENRY W | VP OF NETWORK STRATEGY | 2,400 0.0048% | $9.21 | $22,104 | -15.74% | |
| 2026-09-02 | Sale | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 4,850 0.0089% | $9.37 | $45,445 | -18.30% | |
| 2026-06-16 | Sale | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 4,850 0.0099% | $16.79 | $81,434 | -37.95% | |
| 2026-06-15 | Sale | KILMER HENRY W | VP OF NETWORK STRATEGY | 2,400 0.0051% | $17.01 | $40,824 | -39.34% | |
| 2026-05-28 | Sale | FERGUSON Lewis H | director | 2,800 0.0053% | $20.36 | $57,008 | -48.31% | |
| 2026-05-14 | Sale | Kennedy Sheryl Lynn | director | 3,300 0.0066% | $16.22 | $53,518 | -33.19% | |
| 2026-03-06 | Sale | KILMER HENRY W | VP OF NETWORK STRATEGY | 2,400 0.0049% | $23.35 | $56,040 | -43.00% | |
| 2026-03-05 | Sale | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 4,850 0.0096% | $22.63 | $109,756 | -42.15% | |
| 2026-03-05 | Sale | FERGUSON Lewis H | director | 2,206 0.0045% | $23.03 | $50,804 | -42.15% | |
| 2026-03-05 | Sale | Kennedy Sheryl Lynn | director | 3,300 0.0067% | $22.99 | $75,867 | -42.15% | |
| 2025-12-11 | Sale | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 7,300 0.0147% | $23.99 | $175,127 | -31.59% | |
| 2025-12-08 | Sale | KILMER HENRY W | VP OF NETWORK STRATEGY | 4,800 0.0091% | $19.79 | $94,992 | -20.65% | |
| 2025-12-02 | Sale | FERGUSON Lewis H | director | 4,000 0.0083% | $20.34 | $81,341 | -13.66% | |
| 2025-12-01 | Sale | KILMER HENRY W | VP OF NETWORK STRATEGY | 2,400 – | $0 | $0 | -11.17% | |
| 2025-11-11 | Sale | Kennedy Sheryl Lynn | director | 2,400 0.0044% | $21.34 | $51,221 | -15.31% | |
| 2025-09-05 | Sale | KILMER HENRY W | VP OF NETWORK STRATEGY | 2,400 0.0049% | $36.99 | $88,776 | -45.69% | |
| 2025-09-02 | Sale | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 4,900 0.01% | $36.98 | $181,202 | -45.06% | |
| 2025-08-21 | Sale | Kennedy Sheryl Lynn | director | 2,000 0.0039% | $36.35 | $72,700 | -42.98% | |
| 2025-08-08 | Sale | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 818,909 1.4907% | $27.50 | $22.52M | -26.09% | |
| 2025-08-07 | Sale | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 1.84M 3.4415% | $32.60 | $60.01M | -35.85% |
| FERGUSON Lewis H | director | 21094 0.0412% | $124,665.54 | 2 | 30 | +15.93% |
| Montagner Marc | director | 79468 0.1552% | $469,655.88 | 3 | 8 | +22.65% |
| LIEBHABER RICHARD | director | 66095 0.1291% | $390,621.45 | 4 | 4 | +12.03% |
| BROOKS STEVEN D | director | 33277 0.065% | $196,667.07 | 3 | 18 | +13.09% |
| GLASSMEYER EDWARD F | director | 25825 0.0504% | $152,625.75 | 1 | 2 | |
| WEINGARTEN TIM | director | 21111 0.0412% | $124,766.01 | 3 | 21 | +10.67% |
| Bath Blake | director | 10000 0.0195% | $59,100.00 | 3 | 13 | +10.45% |
| MARGALIT EREL N | director | 0 0% | $0 | 3 | 16 | +6.26% |
$46,710 | 1 | 2.16% | $18.03B | |
$26,704 | 1 | -5.27% | $906.46M | |
$8,706 | 1 | 14.16% | $2.87B |
| Increased Positions | 138 | +41.07% | 10M | +19.2% |
| Decreased Positions | 154 | -45.83% | 12M | -23.13% |
| New Positions | 50 | New | 3M | New |
| Sold Out Positions | 71 | Sold Out | 5M | Sold Out |
| Total Postitions | 320 | -4.76% | 49M | -3.93% |
| Blackrock, Inc. | $142,115.00 | 14.07% | 6.89M | +411,552 | +6.35% | 2025-09-30 |
| Vanguard Group Inc | $110,581.00 | 10.95% | 5.36M | +270,975 | +5.32% | 2025-09-30 |
| Turtle Creek Asset Management Inc. | $94,933.00 | 9.4% | 4.6M | +2M | +64.86% | 2025-09-30 |
| Edgepoint Investment Group Inc. | $47,052.00 | 4.66% | 2.28M | +2,438 | +0.11% | 2025-09-30 |
| State Street Corp | $39,955.00 | 3.95% | 1.94M | +149,443 | +8.36% | 2025-09-30 |
| Morgan Stanley | $37,127.00 | 3.68% | 1.8M | +556,518 | +44.74% | 2025-09-30 |
| Invesco Ltd. | $28,922.00 | 2.86% | 1.4M | +399,339 | +39.8% | 2025-09-30 |
| Magnolia Group, Llc | $26,236.00 | 2.6% | 1.27M | +179,126 | +16.39% | 2025-09-30 |
| Geode Capital Management, Llc | $23,662.00 | 2.34% | 1.15M | +87,140 | +8.22% | 2025-09-30 |
| Bank Of America Corp /De/ | $23,639.00 | 2.34% | 1.15M | +970,367 | +551.19% | 2025-09-30 |