The company announced that Folgueira was resigning to "pursue personal projects."
The Billboard Global Music Index fell 0.3% to 1,517.98, lowering its year-to-date gain to 30.0%.
While Spotify is just now moving towards a penalty system, Apple quietly started making "financial adjustments" for repeat fraudsters more than a year ago.
WMG becomes the second major to sign on to the new structure, which is still limited to the streamer's home territory.
“We are back to meaningful subscriber growth and secured top line acceleration starting in Q4," said CEO Jeronimo Folgueira.
An "in-depth" study will analyze streaming data to evaluate the viability of different economic models for remunerating songwriters, composers and rights holders.
The company's stock ended the week at $4.52 while the overall Billboard Global Music Index gained 1.1% for a year-to-date improvement of 15.2%.
Deezer's new model doesn't address some of the fundamental issues with the economics of streaming, says former Sony Music exec Thomas Hesse.
The trade group has "concerns" that the model will disadvantage independent artists and labels.
Jeronimo Folgueira breaks down the streamer's new "artist-centric" payout model and how the company arrived at the definition of a "professional artist."