Marc is the eldest child of Günther and Heike Fielmann (née Eggert, born 1968), with one younger sister, Sophie Louise, born in 1994.[page:61] The entry explicitly sets up a four‑person core: founder‑patriarch Günther, his wife Heike, their son Marc and their daughter Sophie.[page:61]

German business press articles cited in the entry describe Günther as the “Brillenkönig” (eyewear king) and Marc as his “Kronprinz” (crown prince), underlining that succession has always been framed as a family project.[page:61] Sophie Louise appears only as a biographical note so far, with no listed corporate role, reinforcing Marc’s position as designated operational heir.[page:61]

Marc attended Schule Schloss Salem, the elite boarding school on Lake Constance, before studying at the London School of Economics, where he obtained a BSc.[page:61] This combination of German elite schooling and a London economics degree mirrors the education tracks of many European heir‑CEOs.[page:61]

Before joining the family firm in 2012, he worked in the eyewear industry for Italian giants Luxottica and Safilo Group.[page:61] Those stints provided sector‑specific training outside the family umbrella, a step often used to give heirs credibility before they enter the parent company.[page:61]

Marc joined Fielmann Group in 2012 and rose through roles in marketing and operations before being appointed co‑CEO as part of a structured generational succession.[page:61] In April 2018 he became CEO of Fielmann AG with responsibility for marketing, communications and executive leadership, and in February 2019 took over corporate strategy as well.[page:61]

Handelsblatt reports referenced in the article describe this as the “final phase” of generational transfer, with Günther withdrawing from the management board in 2019 while retaining his role as patriarch and major shareholder.[page:61] The CEO role thus marks the formal shift of day‑to‑day control from founder to son, while ownership and brand identity stay firmly in family hands.[page:61]

Under Marc’s leadership, Fielmann AG has announced plans to dedicate more than €200 million to international expansion and digitisation.[page:61] The group has invested in regional market leaders such as Optika Clarus in Slovenia, Óptica Universitaria and Medical Óptica in Spain, and SVS Vision in the U.S., establishing Fielmann USA as an American platform.[page:61]

In parallel, Fielmann Ventures has taken stakes in technology companies including augmented‑reality provider FittingBox, smart‑glasses developers Ubimax and Deep Optics, and e‑commerce platform Befitting.[page:61] This shifts part of the family empire from pure brick‑and‑mortar optics retail into digital fitting, AR and smart eyewear, positioning Fielmann as both retailer and technology investor.[page:61]

In 2019, at 29, Marc was widely described as Germany’s youngest CEO of a listed company, with some sources claiming he was the youngest CEO among major listed companies worldwide.[page:61] Bloomberg ran a profile headlined “Germany’s Youngest CEO Is 29 Years Old,” presenting him as the face of a generational shift in German corporate leadership.[page:61]

Studies by Heidrick & Struggles on CEO demographics, also cited, use him as a case study in younger successors taking over family‑controlled, publicly traded firms.[page:61] This framing folds his individual promotion into a broader narrative of Europe’s Mittelstand dynasties moving into a more professional, globalised era.

On 1 June 2019, Marc married Russian‑born Irina Pecherskikh (born 1989) at St. Catharinen Church in Westensee, Schleswig‑Holstein.[page:61] They were introduced in London, reflecting Marc’s own period of study at the LSE and the couple’s cosmopolitan social circle.[page:61]

German press coverage of the wedding, cited in the article, emphasised the discreet nature of the ceremony despite the family’s wealth and public profile.[page:61] There is no public information in the entry yet about children, suggesting a deliberate decision to keep any next‑next generation fully out of view for now.[page:61]

While the Marc Fielmann entry focuses on his biography, the linked Fielmann Group materials describe a governance set‑up in which the family remains the anchor shareholder while professional managers support the CEO.[page:61] Günther’s withdrawal from the board, contrasted with ongoing family control and the presence of Marc at the top, fits the textbook German family‑company pattern.[page:61]

With only two children, Marc and Sophie, the immediate succession map is unusually concentrated compared with other dynasties.[page:61] For now, however, all public signals place Marc as the single operational heir, while Sophie’s role, if any, remains off‑stage.