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GRUBER & MCBAINE CAPITAL MANAGEMENT LLC
> CCOI
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2015 | COGENT COMMUNICATIONS HOLDINGS, INC. | CCOI | 60,000 | 60,000 | 2,030,000 | 2,030,000 | $33.83 |
| 03/31/2015 | COGENT COMMUNICATIONS HOLDINGS, INC. | CCOI | 40,000 | 40,000 | 1,413,000 | 1,413,000 | $35.33 |
| 12/31/2014 | COGENT COMMUNICATIONS HOLDINGS, INC. | CCOI | 30,000 | 30,000 | 1,062,000 | 1,062,000 | $35.40 |
| 09/30/2014 | COGENT COMMUNICATIONS HOLDINGS, INC. | CCOI | 0 | -10,000 | 0 | -346,000 | |
| 06/30/2014 | COGENT COMMUNICATIONS HOLDINGS, INC. | CCOI | 10,000 | 10,000 | 346,000 | 346,000 | $34.60 |
| 09/30/2009 | COGENT COMMUNICATIONS HOLDINGS, INC. | CCOI | 0 | -260,000 | 0 | -2,119,000 | |
| 06/30/2009 | COGENT COMMUNICATIONS HOLDINGS, INC. | CCOI | 260,000 | 3,880 | 2,119,000 | 275,000 | $8.15 |
| 03/31/2009 | COGENT COMMUNICATIONS HOLDINGS, INC. | CCOI | 256,120 | -3,880 | 1,844,000 | 146,000 | $7.20 |
| 12/31/2008 | COGENT COMMUNICATIONS HOLDINGS, INC. | CCOI | 260,000 | 72,450 | 1,698,000 | 250,000 | $6.53 |
| 09/30/2008 | COGENT COMMUNICATIONS HOLDINGS, INC. | CCOI | 187,550 | -108,450 | 1,448,000 | -5,570,000 | $7.72 |
| 12/31/2007 | COGENT COMMUNICATIONS HOLDINGS, INC. | CCOI | 296,000 | 296,000 | 7,018,000 | 7,018,000 | $23.71 |
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