X0609 4 2026-04-22 0 0001874252 Quantum Cyber N.V. MYNZ 0001932843 Lazar David E. true 44, TOWER 100, THE TOWERS WINSTON CHURCHILL, PAITILLA PANAMA CITY PANAMA R1 07196 PANAMA 1 1 1 0 Chief Executive Officer 0 Ordinary Shares 0 D Series D Preferred Shares 2026-04-22 4 A 0 1000000 1.50 A 2026-04-22 Ordinary Shares 225000000 1000000 D Series E Preferred Shares 2026-04-22 4 A 0 1000000 1.50 A 2026-04-22 Ordinary Shares 225000000 1000000 D No ordinary shares are beneficially owned. As previously reported, on February 13, 2026 David E. Lazar (the "Reporting Person") and Mainz Biomed N.V. (the "Company") entered into a securies purchase agreement (the "Purchase Agreement") pursuant to which the Reporting Person acquired 1,000,000 Series A Preferred Shares, 1,000,000 Series B Preferred Shares, and 1,000,000 Series C Preferred Shares (collectively, the "First Closing Shares"), at a price of $1.00 per share, for a total purchase price of $3,000,000. Following Stockholder Approval (as defined below) which was obtained on April 22, 2026, the Reporting Person subsequently acquired 1,000,000 Series D Preferred Shares and 1,000,000 Series E Preferred Shares (collectively, the "Second Closing Shares" and, together with the First Closing Shares, the "Preferred Shares"), at a price of $1.50 per share, for an additional purchase price of $3,000,000. On April 22, 2026, the Company's shareholdes approved (a) an increase in the Company's authorized ordinary shares to at least 900,000,000, (b) the conversion of all Preferred Shares into ordinary shares in compliance with the rules and regulations of the Nasdaq Capital Market, (c) a reverse stock split, and (d) the election of the Reporting Person and his designees to the Company's Board of Directors (collectively, the "Stockholder Approval"). Following the receipt of Stockholder Approval, each of the First Closing Shares are now convertible into 9 ordinary shares and each of the Second Closing Shares are now convertible into 225 ordinary shares. The Preferred Stock are convertible into ordinary shares at the option of the Reporting Person for no additional consideration. Each class of Preferred Stock is perpetual and therefore has no expiration date. /s/ David E. Lazar 2026-04-28