Music

Max Martin, Shellback Sell Hit Song Catalogs to HarbourView Equity Partners

Super-producers Max Martin and Shellback, through their songwriting collective, have partnered with investment firm HarbourView Equity Partners, transferring ownership of their extensive song catalogs, including hits by Taylor Swift and Ari

Rolling Stone·Jun 24, 2026·via Rolling Stone

Max Martin, Shellback Sell Hit Song Catalogs to HarbourView Equity Partners

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Max Martin Sells Catalog, Including Taylor Swift and Ariana Grande Songs

The producer along with Shellback, via their songwriting collective, have entered a partnership with investment firm HarbourView Equity Partners

By Althea Legaspi

Althea Legaspi

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June 24, 2026

Max Martin and Shellback’s Wolf Cousins, a songwriting collective the two producers founded, have entered a partnership with investment firm HarbourView Equity Partners. The deal includes HarbourView acquiring a selection of compositions by Wolf Cousins.

The songs include hits by Taylor Swift, Ariana Grande, the Weekend, and more artists. The acquisition price reportedly ranged in a low nine figures, according to Variety sources, although this was not confirmed by HarbourView. The investment firm told the outlet it does not disclose terms for its deals.

“At HarbourView, we invest in culturally relevant intellectual property and the visionary creators behind it,” said Sherrese Clarke, Founder and CEO of HarbourView Equity Partners, via Variety . “Max Martin and Shellback continue to hold their place as hitmakers in contemporary music, and through Wolf Cousins they have built an extraordinary creative ecosystem spanning generations and genres. We are proud to partner with them and help steward the legacy of this remarkable catalog.”

“Wolf Cousins was founded to bring songwriters and producers together in an environment built on collaboration, mentorship and creative development,” Shellback and Martin said in a statement. “HarbourView’s long-term vision and respect for creators make them a natural partner for this body of work.”

In addition to Martin and Shellback, the Wolf Cousins collective includes songwriters and producers such as Ilya Salmanzadeh, Oscar Holter, Tove Lo, Ludvig Söderberg, Jakob Jerlström, Oscar Görres, Ali Payami, Robin Fredriksson, and Mattias Larsson.