|              |              |                                                                                                                   |  |  |  |  |  |  |
|--------------|--------------|-------------------------------------------------------------------------------------------------------------------|--|--|--|--|--|--|
|              |              |                                                                                                                   |
| To:      |    | All Directors and Section 16 Officers of Nordson Corporation                                                 |
|              |              |
| From:    |    | Jennifer L. McDonough, Executive Vice President – General Counsel & Secretary, Nordson Corporation |
|              |              |
| Date:    |    | April 26, 2024                                                                                                    |
|              |              |
| Subject: |    | Notice of Blackout Trading Restriction Period (the “Blackout Period”)                                 |

|        |     |                                                                                                                                                      |  |  |  |  |  |  |
|--------|-----|------------------------------------------------------------------------------------------------------------------------------------------------------|--|--|--|--|--|--|
|   | (i) | purchase, sell, or otherwise acquire or transfer funds into or out of any of the investment alternatives in the Plans, including Nordson Shares; |

|        |      |                                                                                                                              |  |  |  |  |  |  |
|--------|------|------------------------------------------------------------------------------------------------------------------------------|--|--|--|--|--|--|
|   | (ii) | change allocations for future contributions, make payroll percentage elections, or designate beneficiaries in the Plans; |

|        |       |                                                                                                |  |  |  |  |  |  |
|--------|-------|------------------------------------------------------------------------------------------------|--|--|--|--|--|--|
|   | (iii) | receive distributions or withdrawals from, or terminate their participation in, the Plans; |

|        |      |                                      |  |  |  |  |  |  |
|--------|------|--------------------------------------|--|--|--|--|--|--|
|   | (iv) | receive loans from the Plans; or |

----

|        |     |                                             |  |  |  |  |  |  |
|--------|-----|---------------------------------------------|--|--|--|--|--|--|
|   | (v) | make rollover contributions into the Plans. |

|        |     |                                                                                                                                                                                                                    |  |  |  |  |  |  |
|--------|-----|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--|--|--|--|--|--|
|   | (i) | purchasing, selling, or otherwise acquiring or transferring, directly or indirectly, any Nordson Shares acquired in connection with his or her service or employment as a director or Section 16 officer; |

|        |      |                                                                                                                                  |  |  |  |  |  |  |
|--------|------|----------------------------------------------------------------------------------------------------------------------------------|--|--|--|--|--|--|
|   | (ii) | being awarded any “discretionary grant” of Nordson Shares, including options, units, or other equity securities; |

|        |       |                                                                                                             |  |  |  |  |  |  |
|--------|-------|-------------------------------------------------------------------------------------------------------------|--|--|--|--|--|--|
|   | (iii) | exercising options, whether or not in combination with the sale of underlying shares of Nordson Shares; |

|        |      |                                                                |  |  |  |  |  |  |
|--------|------|----------------------------------------------------------------|--|--|--|--|--|--|
|   | (iv) | transferring an investment of Nordson Shares in the Plans; |

|        |     |                                                                                   |  |  |  |  |  |  |
|--------|-----|-----------------------------------------------------------------------------------|--|--|--|--|--|--|
|   | (v) | liquidating a position in a security tied to the value of Nordson Shares; and |

|        |      |                                                                                                                                            |  |  |  |  |  |  |
|--------|------|--------------------------------------------------------------------------------------------------------------------------------------------|--|--|--|--|--|--|
|   | (vi) | enrolling in a plan or establishing or changing the deferral percentage in a plan that offers Nordson Shares as an investment alternative. |

----

|        |         |        |                                                                                                                                                                                                                                             |  |  |  |  |  |  |  |  |
|--------|---------|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--|--|--|--|--|--|--|--|
|   | • |   | Prohibited transactions are not limited to those involving your direct ownership, but include any transaction in which you have a pecuniary interest (for example, transactions by your immediate family members living in your household). |

|        |         |        |                                                                                                                                                                          |  |  |  |  |  |  |  |  |
|--------|---------|--------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--|--|--|--|--|--|--|--|
|   | • |   | There are exemptions for certain transactions including gifts, acquisitions in formula plans and other non-discretionary “automatic” transactions. |

|        |         |        |                                                                                                                                                                                                                         |  |  |  |  |  |  |  |  |
|--------|---------|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--|--|--|--|--|--|--|--|
|   | • |   | To avoid even the impression of wrongdoing, you will not be permitted to engage in transactions involving Nordson Shares that were not acquired in connection with your service or employment as a director or officer. |

|        |         |        |                                                                              |  |  |  |  |  |  |  |  |
|--------|---------|--------|------------------------------------------------------------------------------|--|--|--|--|--|--|--|--|
|   | • |   | These restrictions apply regardless of whether you participate in the Plans. |