| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G | 2010-02-11 | IPG PHOTONICS CORP | IPG PHOTONICS CORP | 19,106,933 | 41.8% | EDGAR |
| SC 13G | 2010-02-11 | IPG PHOTONICS CORP | IPG PHOTONICS CORP | 8,004,002 | 17.5% | EDGAR |
| SC 13G/A | 2010-02-10 | COLUMBIA WANGER ASSET MANAGEMENT LP | IPG PHOTONICS CORP | 4,770,800 | 10.4% | EDGAR |
| SC 13G/A | 2010-01-25 | ROYCE & ASSOCIATES LLC | IPG PHOTONICS CORP | 2,419,599 | 5.3% | EDGAR |
| SC 13G | 2009-02-13 | TA IX LP | IPG PHOTONICS CORP | - | - | EDGAR |
| SC 13G | 2009-02-11 | IPG PHOTONICS CORP | IPG PHOTONICS CORP | 19,699,243 | 43.8% | EDGAR |
| SC 13G | 2009-02-11 | IPG PHOTONICS CORP | IPG PHOTONICS CORP | 8,004,002 | 17.8% | EDGAR |
| SC 13G/A | 2009-02-06 | COLUMBIA WANGER ASSET MANAGEMENT LP | IPG PHOTONICS CORP | 4,867,800 | 10.8% | EDGAR |
| SC 13G | 2009-01-26 | ROYCE & ASSOCIATES LLC | IPG PHOTONICS CORP | 2,464,899 | 5.5% | EDGAR |
| SC 13G/A | 2009-01-23 | NEWLAND CAPITAL MANAGEMENT, LLC | IPG PHOTONICS CORP | 2,918,024 | 6.5% | EDGAR |
| SC 13G/A | 2008-11-10 | COLUMBIA WANGER ASSET MANAGEMENT LP | IPG PHOTONICS CORP | 4,567,000 | 10.2% | EDGAR |
| SC 13G | 2008-11-07 | NEWLAND CAPITAL MANAGEMENT, LLC | IPG PHOTONICS CORP | 2,292,007 | 5.1% | EDGAR |
| SC 13G | 2008-02-13 | TA IX LP | IPG PHOTONICS CORP | - | - | EDGAR |
| SC 13G | 2008-01-23 | COLUMBIA WANGER ASSET MANAGEMENT LP | IPG PHOTONICS CORP | 3,348,000 | 7.6% | EDGAR |
| SC 13G | 2008-01-18 | IPG PHOTONICS CORP | IPG PHOTONICS CORP | 8,032,002 | 18.3% | EDGAR |
| SC 13G | 2008-01-18 | IPG PHOTONICS CORP | IPG PHOTONICS CORP | 19,727,243 | 44.8% | EDGAR |
| SC 13G | 2007-02-13 | TA IX LP | IPG PHOTONICS CORP | - | - | EDGAR |
| SC 13G | 2007-02-09 | IP FIBRE DEVICES LTD | IPG PHOTONICS CORP | 8,204,002 | 19.1% | EDGAR |
| SC 13G | 2007-02-09 | GAPONTSEV VALENTIN P | IPG PHOTONICS CORP | 19,999,243 | 46.6% | EDGAR |