2026-03-26T12:49:57-04:00 2023-12-31 990EZ 2023-11-01 934385992 Pioneer Research Laboratories PION 5619339030 28 GEARY ST STE 625 PMB 5041 San Francisco CA 941085722 Erika DeBenedictis President 6266270107 2026-03-27 2023 2025-03-06 01:10:19Z X X X https: www.pioneer-labs.org X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 See Schedule O Statement 2 Pioneer Research Laboratories is organized and operated exclusively for charitable and educational purposes with a mission of conducting research that contributes to scientific Continued on Schedule O Statement 3 0 X 0 N A 0 X 0 N A 0 0 Erika DeBenedictis President 30 0 0 0 Thomas Kalil Treasurer 0.2 0 0 0 Megan Blewett Secretary 0.2 0 0 0 false false false false false 0 false false false false CA Andrew Rodriguez 455 Valencia Street San Francisco CA 94103 6266270107 false false false false false false false false false false false NONE NONE true X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 X Item B - Amended Return Incorrect tax year listed per our bylaws. Header, General | Explanation:| Pioneer Research Laboratories was incorporated on November 13 2023 and is a newly formed nonprofit organization. During its initial setup phase we were focused on securing our IRS 501c3 status establishing foundational governance and ensuring legal and financial compliance at both the federal and state levels. As a result we experienced delays in understanding the full scope and timing of all required filings. We had no financial activity during the applicable tax period and received no donations or grants. The organization was in a purely administrative phase and did not begin active operations until after the close of the tax year in question. As soon as we became aware of the filing requirements and deadlines we acted swiftly to bring the organization into full compliance. We respectfully request penalty abatement on the basis that the late filing was due to reasonable cause and not willful neglect. Pioneer Research Laboratories is committed to full and timely compliance moving forward and we have implemented improved internal processes including a compliance calendar and dedicated support to ensure that all future filings are submitted on time. Part III, General | Explanation:| Conducting research contributing to scientific knowledge and education in biological engineering and biotechnological innovation and investigating scientific challenges related to environmental and public health. Part III, Line 28 | Explanation:| knowledge and education in biological engineering and biotechnological innovation and of investigating scientific challenges related to environmental and public health. Program Service Accomplishments: During the reporting period Pioneer Research Laboratories was in the initial organizational phase and did not yet conduct active programmatic work. The organization focused its efforts on establishing legal and governance structures securing tax- exempt status and preparing foundational infrastructure for future scientific research programs.