The reconstruction of the Gewiss Stadium started officially on 6 May 2019 by building the new Curva Nord Pisani.
On 25 June 2020, with all the difficulties and limitations caused by the Covid-19 pandemic, the second phase of works began in order to renovate the Tribune which has the access to Viale Giulio Cesare which is named now the Rinascimento Tribune (Renaissance Tribune).
The date of the third phase of works hasn’t been announced yet. In this phase the Curva Sud Morosini will be reconstructed and an underground car park will be built, adjoining the Curva.

The reconstruction of the Rinascimento Tribune started officially on 25 June 2020. The works were completed in less than four months, despite all the limitations and problems related to the Covid-19 pandemic and the home matches of the First team behind closed-doors that ended the campaign of the 2019-2020 Serie A.
On 4 October Atalanta actually played their first match of the 2020-2021 Serie A season at the Gewiss Stadium.
Atalanta-Cagliari was the season opener in which the Nerazzurri team won 5-2. Besides the reconstruction of the Rinascimento Tribune, the black and blue seats were installed in the Curva Sud Morosini: these and other works required by the UEFA allowed the Gewiss Stadium to receive the authorization to host the Champions League matches.

Here is the video that describes the works done from 25 June until 4 October in order to reconstruct the Rinascimento Tribune.

The debut of the New Curva Nord Pisani is dated 6 October 2019 in the occasion of the match Atalanta-Lecce.
It was a winning debut, as the Nerazzurri beat the Salentini by 3-1.
The works officially closed at the end of November 2019 after the so-called finishing touches.

Here is the video that describes 5 intense months of work: from 6 May (the official date of beginning of the first phase of works) until 6 October!