For the financial years (since 2001) not listed in the table below, there have been no changes in the share capital.
| Year | Transaction | No. of shares | Total shares | Share capital, € |
| 2018 | Free share issue | 394,482,260 | 591,723,390 | 336,002,138.50 |
| 2011 | Free share issue | 98,620,565 | 197,241,130 | 336,002,138.50 |
| 2008 | Shares subscribed under option schemes | 31,050 | 98,620,565 | 336,002,138.50 |
| 2008 | Shares issued in Wärtsilä's free share issue and combination of share series | 2,619,954 | 98,589,515 | 98,589,515 |
| 2007 | Shares subscribed under option schemes | 27,000 | 95,969,561 | 335,893,463.50 |
| 2007 | Shares subscribed under option schemes | 134,847 | 95,942,561 | 335,798,963.50 |
| 2007 | Shares subscribed under option schemes | 5,049 | 95,807,714 | 335,326,999.00 |
| 2007 | Shares subscribed under option schemes | 15,000 | 95,802,665 | 335,309,327.50 |
| 2007 | Shares subscribed under option schemes | 85,068 | 95,787,665 | 335,256,827.50 |
| 2007 | Shares subscribed under option schemes | 148,245 | 95,702,597 | 334,959,089.50 |
| 2006 | Shares subscribed under option schemes | 893,625 | 95,554,352 | 334,440,232.00 |
| 2006 | Shares subscribed under option schemes | 32,436 | 94,660,727 | 331,312,544.50 |
| 2006 | Shares subscribed under option schemes | 22,200 | 94,628,291 | 331,199,018.50 |
| 2006 | Shares subscribed under option schemes | 8,400 | 94,606,091 | 331,121,318.50 |
| 2006 | Shares subscribed under option schemes | 58,350 | 94,597,691 | 331,091,918.50 |
| 2006 | Shares subscribed under option schemes | 421,650 | 94,539,341 | 330,887,693.50 |
| 2005 | Shares subscribed under option schemes | 10,575 | 94,117,691 | 329,411,918.50 |
| 2005 | Shares subscribed under option schemes | 300 | 94,107,116 | 329,374,906.00 |
| 2005 | Shares subscribed under option schemes | 33,900 | 94,106,816 | 329,373,856.00 |
| 2005 | Shares subscribed under option schemes | 698,199 | 94,072,916 | 329,255,206.00 |
| 2005 | Shares subscribed under option schemes | 300,300 | 93,374,717 | 326,811,509.50 |
| 2005 | Shares subscribed under option schemes | 73,800 | 93,074,417 | 325,760,459.50 |
| 2005 | Shares subscribed under option schemes | 272,250 | 93,000,617 | 325,502,159.50 |
| 2005 | Shares subscribed under option schemes | 177,750 | 92,728,367 | 324,549,284.50 |
| 2004 | Bonus issue | 30,850,205 | 92,550,617 | 323,927,159.50 |
| 2004 | Debentures converted | 2,050,440 | 61,700,412 | 215,951,442.00 |
| 2003 | Debentures converted | 32,060 | 59,649,972 | 208,774,902.00 |
| 2003 | Bonds with warrants subscribed | 148,800 | 59,617,912 | 208,662,692.00 |
| 2002 | Debentures converted | 15,252 | 59,469,112 | 208,141,892.00 |
| 2001 | Bonds with warrants subscribed | 57,600 | 59,453,860 | 208,088,510.00 |
| 2001 | Debentures converted | 5,193,902 | 59,396,260 | 207,792,410.00 |