CNN —The daughters of Russian President Vladimir Putin rarely make public appearances, but this week they took part in panels at the St. Petersburg International Economic Forum. Putin has said his daughters work in science and education and that he has grandchildren, but he has never confirmed their names. Katerina Tikhonova, Putin's daughter and the head of Innopraktika development initiative, virtually attended the Saint Petersburg International Economic Forum in Saint Petersburg, Russia, on Thursday. Olga Maltseva/AFP/Getty ImagesBoth of them have attended the annual St. Petersburg forum in the past, but only the younger daughter, Tikhonova, has been a speaker, according to the Russian independent outlet Novaya Gazeta Europe. Tikhonova, who is a tech executive, made a video appearance on Thursday at a forum about ensuring the “technological sovereignty” of the military-industrial complex.

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Persons: Vladimir Putin, Maria Vorontsova, Katerina Tikhonova, Lyudmila, Putin, Olga Maltseva, Tikhonova, Vladimir Soloviev, Alexey Navalny, Vorontsova, Kirill Shamalov Organizations: CNN, St ., Economic, Saint Petersburg, Getty, Novaya Gazeta Europe, National Intellectual Development Foundation, US, Russian Association for, Science, Analysts Locations: St, St . Petersburg, Saint Petersburg, Russia, AFP, Petersburg, Russian, Ukraine, Dutch, Netherlands, Biarritz, France