Sellers at the May Marquee Auctions Revealed, Bogotá’s MAMBO Museum Loses Its Director, and More: Morning Links for May 4, 2026

The spring auction season is underway, with ARTnews revealing that Jean-Michel Basquiat's 1983 painting *Museum Security (Broadway Meltdown)* is headed to Sotheby's contemporary art sale on May 14 with a $45 million estimate, consigned by Joahn Sayegh-Belchatowski. Christie's postwar and contemporary day sale includes a collection dubbed "A Matter of Seeing" from Ronald Lauder. Meanwhile, Lévy Gorvy Dayan is testing a new auction-gallery hybrid model, and British billionaire Joe Lewis plans to sell another $200 million in art at Sotheby's in June. In other news, Martha Ortiz has left the Museo de Arte Moderno de Bogotá (MAMBO) following harassment allegations, after the earlier dismissal of artistic director Eugenio Viola. The article also covers a planned Derrick Adams portrait of Koyo Kouoh in Venice, the death of cartoonist Nicole Hollander, a free-entry stunt by Maurizio Cattelan at Fondation Beyeler, a Christo installation at Gagosian London, and a report on Italian Prime Minister Giorgia Meloni's political interference in cultural institutions, including the Venice Biennale.

The 20 Most Expensive Artworks Hitting the Auction Block This Season

The May 2026 New York auctions at Christie’s, Sotheby’s, and Phillips will feature 20 high-value lots priced at $30 million or more, including works by Andy Warhol, Jasper Johns, Pablo Picasso, Piet Mondrian, Jackson Pollock, Willem de Kooning, Cy Twombly, Gerhard Richter, and others. The sales are staggered around the Venice Biennale and Frieze New York, with Sotheby’s holding its contemporary evening auction on May 14 and Christie’s its 20th-century sale on May 18. Notable consignments come from the estates of S.I. Newhouse, former MoMA board president Agnes Gund, and dealer Marian Goodman.

New Louvre Chief Christophe Leribault Reveals His Vision for the Museum Post-Heist

Christophe Leribault, the new director of the Louvre, has outlined his vision for the museum following a $100 million heist in October 2025. The Apollo Gallery, where the theft occurred, will reopen in July with a redesigned display that removes mineral cases to highlight its Romantic wall paintings, inspired by Versailles’s Hall of Mirrors. Empress Eugénie’s diamond-and-emerald crown, crushed by the thieves, is being restored and will become a new highlight. Security upgrades include window bars, 100 new cameras by 2026, a mobile police station, and a new security coordinator. The heist led to the resignation of former director Laurence des Cars in February.

A $35 M. Warhol, a $45 M. Basquiat, and More: Who’s Selling The Top Works in the May Sales?

The article reports on the upcoming May marquee sales at Christie’s and Sotheby’s, detailing high-value consignments from major collections. Christie’s will offer works from the estates of S. I. Newhouse (including a Brâncuși sculpture and a Jackson Pollock painting, each estimated at $100 million), former MoMA board president Agnes Gund (a Rothko estimated at $80 million), and the late dealer Marian Goodman (a Gerhard Richter estimated at $50 million). Sotheby’s counters with a Rothko from the collection of the late Robert Mnuchin (estimated at $100 million) and works from David and Shoshanna Wingate, including a Giacometti sculpture. The article also reveals previously unnamed consignors for top lots, such as collector John Sayegh-Belchatowski for a $45 million Basquiat and the Moore family for an Elizabeth Peyton painting.

Stealing the show: Mona Lisa heist inspires Andrew Lloyd Webber musical

Renowned composer Andrew Lloyd Webber has announced he is developing a new musical based on the 1911 theft of Leonardo da Vinci’s Mona Lisa. The production will dramatize the true story of Vincenzo Peruggia, a Louvre employee who stole the masterpiece and kept it hidden for over two years before attempting to sell it to an antiques dealer in Florence. Lloyd Webber, the creative force behind global hits like Cats and Phantom of the Opera, is currently in the writing phase of the project.

Louisiana reunites Basquiat's 'Heads' for the first time

The Louisiana Museum of Modern Art in Denmark is hosting "Headstrong," the first museum exhibition in Scandinavia dedicated to Jean-Michel Basquiat. The show reunites 49 works on paper created between 1981 and 1984 that focus on the artist's depiction of the head—works Basquiat originally kept for himself and which were only discovered after his death. The exhibition includes the record-breaking 1982 "Untitled" painting, which previously sold for $110.5 million.

Ittai Gradel, gems expert who uncovered British Museum thefts, dies aged 61

Ittai Gradel, a Danish classical gems specialist, has died at age 61. His investigations revealed that hundreds of objects had been stolen from the British Museum, leading to the resignation of director Hartwig Fischer in 2023. Gradel first alerted the museum in 2021 after finding proof that precious objects were being sold on eBay, naming senior curator Peter Higgs as the suspected seller. After initial concerns were ignored, Gradel wrote again in 2022, eventually prompting a police investigation. Higgs was dismissed in July 2023, and Fischer resigned the following month. Of the 2,000 items affected, 626 have been recovered, many bought in good faith by Gradel and returned. Earlier this month, Gradel received a special British Museum award from current director Nicholas Cullinan.

Ittai Gradel, Whistleblower in British Museum Gem Theft, Dies at 61

Ittai Gradel, the Israel-born Danish gem expert who alerted the British Museum to the theft of thousands of antiquities from its collection after discovering them for sale on eBay, died on April 28 of renal cancer at age 61. Days before his death, British Museum officials visited him in hospice and presented him with a rarely awarded medal for his service. Gradel first warned deputy director Jonathan Williams in 2021 that artifacts were being sold online, identified veteran curator Peter Higgs as the culprit, and provided detailed evidence. After the museum failed to act, Gradel contacted then-director Hartwig Fischer; two years later, Higgs was fired, and Fischer and Williams left the institution amid the scandal.

Where are the Louvre Jewels?

Wo sind die Louvre-Juwelen?

Six months after a high-profile heist at the Louvre, investigators remain in pursuit of stolen jewelry valued at approximately €88 million. While four suspects are currently in custody, the bulk of the Second Empire-era treasures remains missing, leading to fears that the pieces may have been dismantled or melted down. The investigation has shifted focus toward how the thieves obtained a sensitive 2018 security audit that detailed vulnerabilities in the museum's defenses.

Six months after the Louvre heist, a 'Complément d'enquête' takes stock, with never-before-seen images broadcast tonight on France 2

Six mois après le casse du Louvre, un « Complément d’enquête » fait le point, avec des images inédites diffusées ce soir sur France 2

On October 19, 2025, eight historic and priceless jewels were stolen from the Galerie d'Apollon at the Louvre Museum in Paris in just over three minutes, using a hoist and an angle grinder. Six months later, the French investigative program "Complément d'enquête" airs a 50-minute documentary titled "Musée du Louvre : dans les coulisses du casse du siècle" on France 2, featuring exclusive surveillance footage, interviews with guards, police, experts, and ministers, and new details about the four suspects arrested within weeks.

After the Heists: Securing Museums Without Closing Them Off

Museums worldwide are grappling with the escalating need for heightened security measures following a series of high-profile thefts, including a recent bold robbery at the Louvre. Institutions are forced to re-evaluate their surveillance protocols and physical barriers to protect priceless cultural heritage from increasingly sophisticated criminal tactics.