| May 2018 |
| 23/05/18 | The alliance petri4 was founded. |
| Founding members::  Puimuri666, Nate Higs and kiira_korpeen. |
|  The alliance reaches a population more than 100. |
|
| 24/05/18 | Joining of:cefirot. |
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| 27/05/18 | The alliance reaches a population more than 1,000. |
|
| 29/05/18 | The alliance is now known as pekko4. |
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| 30/05/18 | The alliance is now known as kutri4. |
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| 31/05/18 | The alliance is now known as petri4. |
| June 2018 |
|
| 01/06/18 | The alliance is now known as tutka4. |
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| 02/06/18 | The alliance is now known as petu4. |
|
| 04/06/18 | The alliance is now known as mutru4. |
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| 06/06/18 | The alliance is now known as pjietr4. |
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| 08/06/18 | The alliance is now known as petri4. |
|
| 10/06/18 | The alliance reaches a population more than 5,000. |
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| 12/06/18 | The alliance is now known as jötör4. |
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| 13/06/18 | The alliance is now known as petri4. |
|
| 21/06/18 |  The alliance have their first conquest. |
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| 28/06/18 | Deletion of:Nate Higs. |
| July 2018 |
|
| 20/07/18 | Deletion of:kiira_korpeen. |