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   <title>Unaudited Preliminary Results for the Year Ended December 31, 2025</title>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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   <title>Unaudited Preliminary Results for the Year Ended December 31, 2025</title>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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   <title>Unaudited Preliminary Results for the Year Ended December 31, 2025</title>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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   <title>Unaudited Preliminary Results for the Year Ended December 31, 2025</title>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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   <title>Unaudited Preliminary Results for the Year Ended December 31, 2025</title>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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   <title>Unaudited Preliminary Results for the Year Ended December 31, 2025</title>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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   <title>Unaudited Preliminary Results for the Year Ended December 31, 2025</title>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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   <title>Unaudited Preliminary Results for the Year Ended December 31, 2025</title>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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   <title>Unaudited Preliminary Results for the Year Ended December 31, 2025</title>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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   <title>Unaudited Preliminary Results for the Year Ended December 31, 2025</title>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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   <title>Unaudited Preliminary Results for the Year Ended December 31, 2025</title>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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   <title>Unaudited Preliminary Results for the Year Ended December 31, 2025</title>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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   <pubDate>Tue, 19 May 2026 02:14:00 -0400</pubDate>
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   <title>Unaudited Preliminary Results for the Year Ended December 31, 2025</title>
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&lt;p align=&quot;justify&quot;&gt;LONDON and PHILADELPHIA, May  19, 2026  (GLOBE NEWSWIRE) -- Avacta Therapeutics (AIM: AVCT, “the Company”, “Avacta”), a clinical stage biopharmaceutical company developing pre|CISION, a tumor-activated oncology delivery platform today published its unaudited preliminary results for the 12 months ended December 31, 2025 (&amp;quot;FY25&amp;quot;).&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;strong&gt;FY25 Highlights &lt;/strong&gt;&lt;/p&gt;  &lt;p align=&quot;justify&quot;&gt;&lt;em&gt;Research &amp;amp; Development (R&amp;amp;D) Highlights&lt;/em&gt;&lt;/p&gt;  &lt;ul type=&quot;disc&quot;&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Increased momentum and strengthened position as a pure-play oncology biopharmaceutical company by focusing on the Company’s unique proprietary pre|CISION® peptide drug conjugate platform, with significant progress in R&amp;amp;D programs&lt;br/&gt;&lt;br/&gt;&lt;/li&gt;&lt;li style=&quot;margin-bottom:6pt; text-align:justify;&quot;&gt;Gen Two (AVA6103):&lt;br/&gt;   &lt;ul type=&quot;circle&quot;&gt;&lt;li style=&quot;margin-bottom:6pt;</description>
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   <pubDate>Tue, 19 May 2026 02:14:00 -0400</pubDate>
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