Previous X-PPL editions
| Year | Dates | Program | Keynote speakers |
|---|---|---|---|
| 2025 | Sep 1–2 | 2025 program | Sudha Arunachalam, Lars Meyer |
| 2024 | Sep 2–3 | 2024 program | Samar Husain, Alex Cristia |
| 2023 | Nov 6–7 | 2023 program | Aylin Küntay, Susan Goldin-Meadow, Ina Bornkessel-Schlesewsky |
| 2022 | Sep 12–13 | 2022 program | Shanley Allen, Matthew Wagers |
| 2021 | Sep 16–17 | 2021 program | Elena Lieven, Asli Ozyurek |
| 2019 | Nov 4–5 | 2019 program | Inbal Arnon, Monique Flecken, Michael C. Frank, David Kemmerer |