Max Martin and Shellback sell their Wolf Cousins songwriting catalog to HarbourView for a reported nine figures

Max Martin and Shellback have sold a slice of the songbook that built two decades of pop radio. On June 24, HarbourView Equity Partners announced it had acquired a selection of compositions from Wolf Cousins, the Stockholm songwriting and production collective the two Swedes founded. Variety, which broke the deal, reported the price in the low nine figures, citing sources. HarbourView would not confirm a number and says it does not disclose terms.

Read the fine print before you picture Taylor Swift's masters changing hands, because they are not. This is a publishing deal. What HarbourView bought is a stake in the compositions, the underlying songs that Martin, Shellback and their Wolf Cousins writers put their names on. The recordings still belong to whoever they always belonged to. The royalty stream attached to the songwriting is the asset here, and for a catalog like this one, that stream is a river.

Look at what is in it. Taylor Swift's "Style" and "...Ready for It?" Ariana Grande's "Problem," "Into You" and "No Tears Left to Cry." The Weeknd's "Can't Feel My Face." Imagine Dragons' "Believer." Ellie Goulding's "Love Me Like You Do." Tove Lo's "Habits (Stay High)." DNCE's "Cake by the Ocean." These are not deep cuts. They are the songs that ran the back half of the 2010s, the ones that still turn up in grocery stores, gym playlists and car commercials, which is exactly the kind of boring, dependable income that catalog investors chase.

That is the part worth sitting with. Max Martin, born Karl Martin Sandberg, has been the most successful and most invisible hitmaker in modern pop since the late Britney and Backstreet era. He does not do interviews. He does not do red carpets, mostly. He has more Hot 100 number ones as a writer than anyone except Lennon and McCartney, and he built a Swedish hit factory, Wolf Cousins, that turned the craft into an assembly line in the best sense, with younger writers learning the trade next to him. Shellback, born Karl Johan Schuster, came up through that system and became Martin's most important collaborator on the Swift and Pink records. Now the two of them have turned a chunk of that work into a financial instrument.

HarbourView framed it as stewardship. "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," said founder and CEO Sherrese Clarke in a statement. Martin and Shellback, in a joint statement, called the firm's "long-term vision and respect for creators" the reason for the sale, and noted that Wolf Cousins was built "on collaboration, mentorship, and creative development." The collective's roster is deep on its own: Ilya Salmanzadeh, Oscar Holter, Tove Lo, Ludvig Söderberg, Jakob Jerlström, Oscar Görres, Ali Payami, Robin Fredriksson and Mattias Larsson, names that show up in the small print of a startling number of recent hits.

For HarbourView this is one more trophy on a crowded shelf. The firm launched in 2021 under Clarke and has acquired more than 70 catalogs, including deals tied to the Quincy Jones estate, Slipknot, Kelly Clarkson, the Christine McVie estate and Pat Benatar. The Wolf Cousins partnership fits the house style: buy proven, radio-tested intellectual property whose earnings are easy to model and hard to kill.

The interesting question is timing. Songwriter catalogs have been selling at rich multiples for years now, and the people who actually wrote the era-defining songs have watched older artists cash out while interest rates and AI uncertainty hang over everything that comes next. Selling a selection rather than the whole songbook lets Martin and Shellback take real money off the table while keeping their hands on the parts they want, and on whatever they write tomorrow. They are not retiring. They are diversifying. The most anonymous man in pop just made his anonymity liquid, and the songs will keep paying out long after anyone remembers who pressed record.