Quantinuum Inc. reports that Capital World Investors holds 4,558,976 shares of Common Stock, representing 13.9% of the company as of 06/30/2026. The filing states the 4,558,976 shares reflect sole voting and dispositive power. The filing cites 32,862,895 shares believed to be outstanding as context.
Quantinuum Inc. shareholders Cambridge Quantum Holdings Limited, CQ Invest I LLC, Ilyas Khan and Waseem Shiraz filed a joint Schedule 13G reporting concerted beneficial ownership positions. The filing states 82,884,823 shares of Class A common stock are issuable upon conversion of Common Units and Class B shares, representing approximately 71.5% of Class A on the conversion basis as reported in the issuer's prospectus dated June 3, 2026.
The filing discloses that Cambridge Quantum Holdings Limited directly holds 82,353,103 Common Units and CQ Invest I LLC holds 531,720 Common Units. Mr. Khan directly holds 480,511 Class A shares and Mr. Shiraz directly holds 27,001 Class A shares in their personal capacities.
Quantinuum Inc. director Prineha Narang reported new equity activity in Class A Common Stock. On June 5, 2026, Narang made an open-market purchase of 200 shares at $60.00 per share, bringing direct holdings to 6,033 shares.
On June 4, 2026, Narang also received an award of 5,833 restricted stock units, each representing one share of Class A Common Stock. According to the award terms, these RSUs will vest in three equal annual installments beginning on June 5, 2027, adding a long-term equity component to the director’s compensation.
Quantinuum Inc. director Joseph Jimenez reported new share acquisitions. He made an open-market purchase of 66,665 shares of Class A Common Stock at $60.00 per share on June 5, 2026, bringing his directly held stake to 72,498 shares.
On June 4, 2026, he also received a grant of 5,833 restricted stock units, each representing one future share of Class A Common Stock. These RSUs vest in three equal annual installments beginning on June 5, 2027, aligning part of his compensation with the company’s long-term performance.
Quantinuum Inc.’s Chief Financial Officer Nitesh Sharan reported several acquisitions of Class A Common Stock. He received 289,798 restricted shares in a recapitalization transaction and a further 44,548 restricted shares as a stock award. These awards were made at no cash cost to him.
After these awards, he made an open-market purchase of 6,500 shares at $60.00 per share. Following these transactions, he directly owns 340,846 Class A Common Stock shares. One award was completed before Quantinuum’s initial public offering and is being reported under Rule 16a-2(a).
Quantinuum Inc. director Hal Barron significantly increased his direct stake through a large open-market purchase and a new equity award. On Class A Common Stock, he bought 250,000 shares in the open market at $60.00 per share, bringing his direct holdings to 255,833 shares after the trade.
He also received an award of 5,833 restricted stock units, each representing one future share of Class A Common Stock. These RSUs will vest in three equal annual installments beginning on June 5, 2027, adding a long-term, performance-aligned component to his ownership.
Quantinuum Inc. director Eric Branderiz increased his stake through a mix of grant and open-market buying. He received 5,833 shares of Class A Common Stock as a restricted stock unit (RSU) award on June 4, 2026, at a stated price of $0.00 per share. These RSUs vest in three equal annual installments beginning on June 5, 2027, each convertible into one share of Class A Common Stock.
On June 5, 2026, he made an open-market purchase of 8,334 shares at $60.00 per share. Following the purchase, his direct holdings reported in this filing rose to 14,167 shares of Class A Common Stock.
Quantinuum Inc. director Vimal Kapur reported an open-market purchase of 13,000 shares of Class A Common Stock. The transaction took place on 2026-06-05 at a price of $60.0000 per share. Following this purchase, Kapur directly holds 13,000 shares of Quantinuum common stock.
Quantinuum Inc. director Michal Stepniak reported an open-market purchase of Class A Common Stock. On June 5, he bought 13,333 shares at a price of $60.00 per share and now holds 13,333 shares directly following this transaction.
Quantinuum Inc. Chief Strategy Officer Kevin Scott Dehoff increased his direct stake in Class A Common Stock through both a grant and a market purchase. On June 3, 2026, he acquired 111,460 restricted shares in connection with a recapitalization transaction at a stated price of $0.00 per share. On June 5, 2026, he made an open-market purchase of an additional 15,000 shares at $60.00 per share. Following these transactions, Dehoff directly owns 126,460 Class A shares, aligning his interests more closely with shareholders ahead of the company’s initial public offering.