IPGP insider transactions

SVP, Chief Financial Officer Mammen Timothy Pv sold $1,195,098 worth of shares (9,975 units at $119.81), decreasing direct ownership by 12% to 76,438 units (SEC Form 4)

Director Kennedy Kolleen T was granted 2,436 shares, increasing direct ownership by 27% to 11,513 units (SEC Form 4)

Director Peeler John R was granted 2,436 shares, increasing direct ownership by 15% to 18,176 units (SEC Form 4)

Director Dougherty Greg was granted 2,436 shares, increasing direct ownership by 15% to 18,334 units (SEC Form 4)

Director Desmond Jeanmarie F. was granted 2,436 shares, increasing direct ownership by 25% to 12,176 units (SEC Form 4)

Director Meurice Eric was granted 2,436 shares, increasing direct ownership by 11% to 25,239 units (SEC Form 4)

SVP, Chief Scientist Samartsev Igor was granted 2,436 shares (SEC Form 4)

Director Agnes Tang was granted 2,436 shares, increasing direct ownership by 28% to 11,099 units (SEC Form 4)

Director Beecher Gregory R was granted 2,436 shares, increasing direct ownership by 25% to 12,216 units (SEC Form 4)

VP, Corp Controller and CAO Buttarazzi Mary E. sold $58,110 worth of shares (500 units at $116.22), decreasing direct ownership by 10% to 4,749 units (SEC Form 4)

SEC Form 4 filed by SVP, Chief Scientist Samartsev Igor

SVP, Chief Financial Officer Mammen Timothy Pv covered exercise/tax liability with 4,310 shares, decreasing direct ownership by 5% to 86,413 units (SEC Form 4)

SVP, Secretary & Gen Counsel Lopresti Angelo P covered exercise/tax liability with 3,848 shares, decreasing direct ownership by 6% to 60,841 units (SEC Form 4)

CEO Gitin Mark Milton covered exercise/tax liability with 7,603 shares, decreasing direct ownership by 8% to 91,873 units (SEC Form 4)

Director Scherbakov Eugene A covered exercise/tax liability with 7,237 shares, decreasing direct ownership by 12% to 51,258 units (SEC Form 4)

VP, Corp Controller and CAO Buttarazzi Mary E. covered exercise/tax liability with 435 shares, decreasing direct ownership by 8% to 5,249 units (SEC Form 4)

SVP, Chief Revenue Officer Ness Trevor covered exercise/tax liability with 3,402 shares, decreasing direct ownership by 8% to 38,425 units (SEC Form 4)

SVP, Chief Scientist Samartsev Igor covered exercise/tax liability with 836 shares (SEC Form 4)

Large owner Ip Fibre Devices Ltd sold $8,526,978 worth of shares (64,167 units at $132.89), decreasing direct ownership by 0.97% to 6,529,002 units (SEC Form 4)

Director Scherbakov Eugene A sold $372,141 worth of shares (2,700 units at $137.83), decreasing direct ownership by 4% to 58,495 units (SEC Form 4)

SEC Form 4 filed by SVP, Chief Scientist Samartsev Igor

VP, Corp Controller and CAO Buttarazzi Mary E. was granted 1,789 shares, increasing direct ownership by 46% to 5,684 units (SEC Form 4)

SVP, Chief Revenue Officer Ness Trevor was granted 4,621 shares, increasing direct ownership by 12% to 41,827 units (SEC Form 4)

SVP, Chief Financial Officer Mammen Timothy Pv was granted 6,146 shares, increasing direct ownership by 7% to 90,723 units (SEC Form 4)

SVP, Global Operations Bucher Paulus was granted 2,531 shares, increasing direct ownership by 60% to 6,716 units (SEC Form 4)

SVP, Chief Scientist Samartsev Igor was granted 1,688 shares (SEC Form 4)

SVP, Secretary & Gen Counsel Lopresti Angelo P was granted 4,465 shares, increasing direct ownership by 7% to 64,689 units (SEC Form 4)

CEO Gitin Mark Milton was granted 19,887 shares, increasing direct ownership by 25% to 99,476 units (SEC Form 4)

Large owner Valentin Gapontsev Trust I sold $8,700,865 worth of shares (66,500 units at $130.84), decreasing direct ownership by 0.98% to 6,726,599 units (SEC Form 4)

SVP, Chief Scientist Samartsev Igor exercised 3,363 shares at a strike of $81.89 (SEC Form 4)

Director Scherbakov Eugene A exercised 7,592 shares at a strike of $81.89 and covered exercise/tax liability with 5,727 shares, increasing direct ownership by 3% to 61,195 units (SEC Form 4)

SVP, Secretary & Gen Counsel Lopresti Angelo P exercised 5,861 shares at a strike of $81.89 and covered exercise/tax liability with 4,022 shares, increasing direct ownership by 3% to 60,224 units (SEC Form 4)

Director Meurice Eric exercised 750 shares at a strike of $87.87 and sold $71,250 worth of shares (750 units at $95.00) (SEC Form 4)

SVP, Secretary & Gen Counsel Lopresti Angelo P sold $127,500 worth of shares (1,500 units at $85.00), decreasing direct ownership by 3% to 58,385 units (SEC Form 4)

Director Scherbakov Eugene A sold $218,586 worth of shares (2,700 units at $80.96), decreasing direct ownership by 4% to 59,330 units (SEC Form 4)

Large owner Ip Fibre Devices Ltd sold $5,147,715 worth of shares (64,167 units at $80.22), decreasing direct ownership by 0.96% to 6,593,169 units (SEC Form 4)

Large owner Valentin Gapontsev Trust I sold $636,987 worth of shares (7,952 units at $80.10), decreasing direct ownership by 0.12% to 6,793,099 units (SEC Form 4)

Large owner Valentin Gapontsev Trust I sold $4,504,354 worth of shares (58,548 units at $76.93), decreasing direct ownership by 0.85% to 6,801,051 units (SEC Form 4)

Director Scherbakov Eugene A sold $200,986 worth of shares (2,700 units at $74.44), decreasing direct ownership by 4% to 62,030 units (SEC Form 4)

Large owner Ip Fibre Devices Ltd sold $4,808,590 worth of shares (64,167 units at $74.94), decreasing direct ownership by 0.95% to 6,657,336 units (SEC Form 4)

Large owner Valentin Gapontsev Trust I sold $5,146,832 worth of shares (66,500 units at $77.40), decreasing direct ownership by 0.96% to 6,859,599 units (SEC Form 4)

SVP, Secretary & Gen Counsel Lopresti Angelo P sold $127,605 worth of shares (1,500 units at $85.07), decreasing direct ownership by 2% to 59,885 units (SEC Form 4)

Director Agnes Tang sold $144,363 worth of shares (1,881 units at $76.75), decreasing direct ownership by 18% to 8,663 units (SEC Form 4)

Director Scherbakov Eugene A sold $205,294 worth of shares (2,700 units at $76.03), decreasing direct ownership by 4% to 64,730 units (SEC Form 4)

Large owner Ip Fibre Devices Ltd sold $4,838,548 worth of shares (64,167 units at $75.41), decreasing direct ownership by 0.95% to 6,721,503 units (SEC Form 4)

Large owner Valentin Gapontsev Trust I sold $5,091,185 worth of shares (66,500 units at $76.56), decreasing direct ownership by 0.95% to 6,926,099 units (SEC Form 4)

SVP, Chief Revenue Officer Ness Trevor sold $127,050 worth of shares (1,681 units at $75.58), decreasing direct ownership by 4% to 37,206 units (SEC Form 4)

Director Meurice Eric exercised 750 shares at a strike of $87.87 and sold $69,000 worth of shares (750 units at $92.00) (SEC Form 4)

SVP, Secretary & Gen Counsel Lopresti Angelo P sold $130,695 worth of shares (1,500 units at $87.13), decreasing direct ownership by 2% to 61,385 units (SEC Form 4)

Director Scherbakov Eugene A sold $236,633 worth of shares (2,700 units at $87.64), decreasing direct ownership by 4% to 67,430 units (SEC Form 4)

Large owner Ip Fibre Devices Ltd sold $5,582,496 worth of shares (64,167 units at $87.00), decreasing direct ownership by 0.94% to 6,785,670 units (SEC Form 4)

SVP, Sales & Strategic Bus Dev Ness Trevor sold $145,978 worth of shares (1,678 units at $87.00), decreasing direct ownership by 4% to 38,887 units (SEC Form 4)

Large owner Valentin Gapontsev Trust I sold $5,562,141 worth of shares (66,500 units at $83.64), decreasing direct ownership by 0.94% to 6,992,599 units (SEC Form 4)

Director Meurice Eric exercised 1,502 shares at a strike of $87.87 and sold $134,676 worth of shares (1,502 units at $89.66) (SEC Form 4)

SVP, Secretary & Gen Counsel Lopresti Angelo P sold $127,755 worth of shares (1,500 units at $85.17), decreasing direct ownership by 2% to 62,885 units (SEC Form 4)

Director Scherbakov Eugene A sold $220,879 worth of shares (2,700 units at $81.81), decreasing direct ownership by 4% to 70,130 units (SEC Form 4)

Large owner Ip Fibre Devices Ltd sold $5,250,299 worth of shares (64,167 units at $81.82), decreasing direct ownership by 0.93% to 6,849,837 units (SEC Form 4)

SVP, Sales & Strategic Bus Dev Ness Trevor sold $138,674 worth of shares (1,678 units at $82.64), decreasing direct ownership by 4% to 40,565 units (SEC Form 4)

Large owner Valentin Gapontsev Trust I sold $5,366,553 worth of shares (66,500 units at $80.70), decreasing direct ownership by 0.93% to 7,059,099 units (SEC Form 4)

SEC Form 4 filed by SVP, Chief Scientist Samartsev Igor