XML 131 R123.htm IDEA: XBRL DOCUMENT
v3.25.3

Key Management Personnel Disclosures - Summary of Number of Performance Rights Over Ordinary Shares in Parent Entity (Detail) - Performance rights [member] | 12 Months Ended
--- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2023
Disclosure of key management personnel compensation [line items] |  |  |  |  |
Balance at start of the fiscal year Number |  | 12,538,581 | 9,993,081 |  | 13,339,621
Granted |  | 9,500,000 | 2,112,167 |  | 1,624,499
Exercised |  | (6,816,947) | (500,000) |  | (4,606,173)
Other changes |  | (1,343,856) | 0 |  | (364,866)
Balance at end of the end fiscal year Number |  | 13,877,778 | 12,538,581 |  | 9,993,081
Vested and exercisable |  | 0 | 2,931,517 |  | 0
Unvested |  | 13,877,778 | 8,673,731 |  | 9,993,081
Previously Reported [Member] |  |  |  |  |
Disclosure of key management personnel compensation [line items] |  |  |  |  |
Balance at start of the fiscal year Number |  | 11,605,248 |  |  |
Balance at end of the end fiscal year Number |  |  | 11,605,248 |  |
Dr Russell Howard [member] |  |  |  |  |
Disclosure of key management personnel compensation [line items] |  |  |  |  |
Balance at start of the fiscal year Number |  | 404,770 | 226,414 |  | 339,621
Granted |  | 0 | 178,356 |  | 0
Exercised |  | (304,770) | 0 |  | (113,207)
Other changes |  | 0 | 0 |  | 0
Balance at end of the end fiscal year Number |  | 100,000 | 404,770 |  | 226,414
Vested and exercisable |  | 0 | 141,563 |  | 0
Unvested |  | 100,000 | 263,207 |  | 226,414
Mr Pete Meyers [member] |  |  |  |  |
Disclosure of key management personnel compensation [line items] |  |  |  |  |
Balance at start of the fiscal year Number |  | 1,166,667 | 1,666,667 |  | 1,000,000
Granted |  | 0 | 0 |  | 1,166,667
Exercised |  | (388,889) | (500,000) |  | (500,000)
Other changes |  | 0 | 0 |  | 0
Balance at end of the end fiscal year Number |  | 777,778 | 1,166,667 |  | 1,666,667
Vested and exercisable |  | 0 | 0 |  | 0
Unvested |  | 777,778 | 1,166,667 |  | 1,666,667
Mr Marc Voigt [member] |  |  |  |  |
Disclosure of key management personnel compensation [line items] |  |  |  |  |
Balance at start of the fiscal year Number |  | 3,600,000 | 3,600,000 |  | 6,000,000
Granted |  | 3,600,000 | 0 |  | 0
Exercised |  | (2,400,000) | 0 |  | (2,400,000)
Other changes |  | 0 | 0 |  | 0
Balance at end of the end fiscal year Number |  | 4,800,000 | 3,600,000 |  | 3,600,000
Vested and exercisable |  | 0 | 1,200,000 |  | 0
Unvested |  | 4,800,000 | 2,400,000 |  | 3,600,000
Dr Frédéric Triebel [member] |  |  |  |  |
Disclosure of key management personnel compensation [line items] |  |  |  |  |
Balance at start of the fiscal year Number |  | 2,700,000 | 2,700,000 |  | 3,600,000
Granted |  | 2,700,000 | 0 |  | 0
Exercised |  | (1,800,000) | 0 |  | (900,000)
Other changes |  | 0 | 0 |  | 0
Balance at end of the end fiscal year Number |  | 3,600,000 | 2,700,000 |  | 2,700,000
Vested and exercisable |  | 0 | 900,000 |  | 0
Unvested |  | 3,600,000 | 1,800,000 |  | 2,700,000
Ms Anne Anderson [Member] |  |  |  |  |
Disclosure of key management personnel compensation [line items] |  |  |  |  |
Balance at start of the fiscal year Number |  | 0 | 0 |  |
Granted |  | 0 | 0 |  |
Exercised |  | 0 | 0 |  |
Other changes |  | 0 | 0 |  |
Balance at end of the end fiscal year Number |  | 0 | 0 |  | 0
Vested and exercisable |  | 0 | 0 |  |
Unvested |  | 0 | 0 |  |
Ms Lis Boyce [Member] |  |  |  |  |
Disclosure of key management personnel compensation [line items] |  |  |  |  |
Balance at start of the fiscal year Number |  | 589,955 | 0 |  | 0
Granted |  | 0 | 589,955 |  | 0
Exercised |  | (256,621) | 0 |  | 0
Other changes |  | 0 | 0 |  | 0
Balance at end of the end fiscal year Number |  | 333,334 | 589,955 |  | 0
Vested and exercisable |  | 0 | 89,954 |  | 0
Unvested |  | 333,334 | 500,001 |  | 0
Ms Deanne Miller [member] |  |  |  |  |
Disclosure of key management personnel compensation [line items] |  |  |  |  |
Balance at start of the fiscal year Number |  | 1,800,000 | 1,800,000 |  | 2,400,000
Granted |  | 1,800,000 | 0 |  | 0
Exercised |  | (1,200,000) | 0 |  | (600,000)
Other changes |  | 0 | 0 |  | 0
Balance at end of the end fiscal year Number |  | 2,400,000 | 1,800,000 |  | 1,800,000
Vested and exercisable |  | 0 | 600,000 |  | 0
Unvested |  | 2,400,000 | 1,200,000 |  | 1,800,000
Dr Florian Vogl [Member] |  |  |  |  |
Disclosure of key management personnel compensation [line items] |  |  |  |  |
Balance at start of the fiscal year Number |  | 1,343,856 | 0 |  |
Granted |  | 0 | 1,343,856 |  |
Exercised |  | 0 | 0 |  |
Other changes |  | (1,343,856) | 0 |  |
Balance at end of the end fiscal year Number |  | 0 | 1,343,856 |  | 0
Vested and exercisable |  | 0 | 0 |  |
Unvested |  | 0 | 1,343,856 |  |
Ms Lucy Turnbull A O [member] |  |  |  |  |
Disclosure of key management personnel compensation [line items] |  |  |  |  |
Balance at start of the fiscal year Number |  |  | 0 |  | 0
Granted |  |  |  |  | 457,832
Exercised |  |  |  |  | (92,966)
Other changes | [1] |  |  |  | (364,866)
Balance at end of the end fiscal year Number |  |  |  |  | 0
Vested and exercisable |  |  |  |  | 0
Unvested |  |  |  |  | 0
Mr Christian Mueller [Member] |  |  |  |  |
Disclosure of key management personnel compensation [line items] |  |  |  |  |
Balance at start of the fiscal year Number | [2] | 933,333 |  |  |
Granted | [2] | 1,400,000 |  |  |
Exercised | [2] | (466,667) |  |  |
Other changes |  | 0 |  |  |
Balance at end of the end fiscal year Number |  | 1,866,666 | 933,333 | [2] |
Vested and exercisable |  | 0 |  |  |
Unvested |  | 1,866,666 |  |  |
[1] | The change during the year represents derecognition due to the cessation of the director’s position.
[2] | Performance rights held before being appointed as key management personnel

X
- Definition The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2025-01-01 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2025-01-01 -Paragraph 47 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_47_b&doctype=Standard -URIDate 2025-03-27 + Details
Name: | ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of other equity instruments (ie other than share options) exercised or vested in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2025-01-01 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45&doctype=Standard -URIDate 2025-03-27 + Details
Name: | ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of other equity instruments (ie other than share options) outstanding in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2025-01-01 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45&doctype=Standard -URIDate 2025-03-27 + Details
Name: | ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Disclosure of key management personnel compensation line items. + References No definition available. + Details
Name: | immp_DisclosureOfKeyManagementPersonnelCompensationLineItems
Namespace Prefix: | immp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of other equity instruments other changes in share based payment arrangement. + References No definition available. + Details
Name: | immp_NumberOfOtherEquityInstrumentsOtherChangesInShareBasedPaymentArrangement
Namespace Prefix: | immp_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of other equity instruments unvested in share based payment arrangement. + References No definition available. + Details
Name: | immp_NumberOfOtherEquityInstrumentsUnvestedInShareBasedPaymentArrangement
Namespace Prefix: | immp_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of share options or other equity instruments vested and exercisable in share based payment arrangement. + References No definition available. + Details
Name: | immp_NumberOfShareOptionsOrOtherEquityInstrumentsVestedAndExercisableInShareBasedPaymentArrangement
Namespace Prefix: | immp_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=immp_PerformanceRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RestatementAxis=srt_ScenarioPreviouslyReportedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=immp_DrRussellHowardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=immp_MrPeteMeyersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=immp_MrMarcVoigtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=immp_DrFredericTriebelMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=immp_MsAnneAndersonMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=immp_MsLisBoyceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=immp_MsDeanneMillerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=immp_DrFlorianVoglMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=immp_MsLucyTurnbullAOMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=immp_MrChristianMuellerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |