Horizon Quantum Taps Tech Giants for Board Ahead of Public Debut

SINGAPORE – March 09, 2026 – Horizon Quantum, a pioneer in software for the nascent quantum computing industry, is assembling a powerhouse leadership team stacked with veterans from Apple, Grab, and Broadcom as it prepares to enter the public market. The move signals a major step toward maturity for the Singapore-based company and the broader quantum sector.

Following a definitive business combination agreement with dMY Squared Technology Group, Inc., a special purpose acquisition company (SPAC), Horizon Quantum announced its expected new board of directors and a chief legal officer. These appointments are designed to guide the company through the complexities of its public listing and subsequent growth phase.

The proposed board will include Danielle Lambert, a former VP of Human Resources at Apple who was instrumental in building teams for the iPod and iPhone; Peter Oey, the current CFO of Southeast Asian superapp Grab; Jill Turner, the Chief Human Resources Officer at semiconductor giant Broadcom; and Harry You, the Chairman of the dMY SPAC who previously served as lead independent director at quantum hardware company IonQ.

In addition, Catherine Fitzsimons, currently a Director of Strategic Initiatives at Fidelity International, is set to join Horizon Quantum in May as its Chief Legal and Compliance Officer.

“Horizon Quantum is entering a crucial next phase of growth as we prepare to go public,” said Dr. Joe Fitzsimons, the company's founder and CEO. “Bringing world-class appointments to our board and leadership team strengthens the company and enhances our ability to achieve our mission of unlocking the full potential of quantum computers.”

Assembling a 'Who's Who' for the Public Leap

The slate of incoming leaders brings a wealth of experience in scaling high-growth technology companies, navigating public markets, and managing global operations—skills essential for a deep-tech firm transitioning from a private startup to a publicly-traded entity. Each appointee addresses a strategic need for Horizon Quantum's ambitious road ahead.

Danielle Lambert’s experience at Apple during its period of explosive growth, followed by her advisory role at Nest Labs through its acquisition by Alphabet, provides a playbook for scaling talent and culture in a rapidly expanding tech firm. Peter Oey’s financial stewardship at Grab and his prior role taking LegalZoom.com public offer direct, relevant expertise in managing the financial rigors of a public company. Jill Turner’s background in human resources at technology titans like Broadcom and Honeywell will be critical for attracting and retaining the highly specialized talent required in the quantum field.

Perhaps most notably, the appointment of Harry You provides a direct bridge between the worlds of quantum technology and high finance. His experience as CFO at Accenture and Oracle, combined with his recent directorship at IonQ, gives him a unique perspective on the operational and strategic challenges facing a public quantum company. This blend of hardware-side knowledge and software-focused investment underscores a holistic approach to the quantum ecosystem.

Catherine Fitzsimons's move from Fidelity International to become Chief Legal Officer is equally strategic. As the company prepares for the heightened scrutiny and regulatory demands of the public market, her experience in global product legal and strategic initiatives at a major financial institution will be invaluable. “I have full confidence that she will be an excellent steward for the Company and all of its stakeholders, especially its new public shareholders," said Harry You.

The Financial Mechanics of Going Public

The leadership overhaul comes as Horizon Quantum finalizes its merger with dMY Squared, a transaction that initially valued the quantum software developer at approximately $546 million. Upon completion, the combined entity will trade on the Nasdaq under the ticker symbol “HQ.”

The deal is supported by a significantly oversubscribed Private Investment in Public Equity (PIPE) financing, which raised approximately $111.9 million from investors including the strategic partner and quantum hardware firm IonQ. The strong interest in the PIPE signals robust investor confidence in Horizon’s software-centric approach.

In a recent development on March 9, 2026, the terms of the PIPE were amended. The change permits certain investors to use dMY Class A shares they already own or acquire to offset their new share purchase obligations. While this could potentially reduce the influx of new cash from the PIPE, it is a strategic move designed to enhance deal certainty and support share price stability post-merger—a common tactic to de-risk SPAC transactions in a volatile market.

Assuming no redemptions by dMY’s public shareholders, Horizon Quantum anticipates having access to approximately $137 million in cash upon the deal's closing. These funds are earmarked to accelerate research and development, expand its hardware testbed, and continue advancing its flagship software platform.

Bridging the Gap to Quantum Advantage

Beyond the corporate maneuvers and financial engineering, the core of Horizon Quantum's mission is to solve one of the biggest challenges in computing: making quantum computers useful. The company does not build the complex quantum hardware itself. Instead, it creates the critical software infrastructure that allows developers to harness the power of these revolutionary machines.

Its flagship product, Triple Alpha, is an integrated development environment designed to abstract away the immense complexity of quantum physics. It enables developers to write sophisticated programs that can, in theory, run on any type of quantum hardware. This hardware-agnostic approach is crucial in a field where various competing technologies—from superconducting circuits to trapped ions—are all vying for dominance.

The ultimate goal is to help users achieve "quantum advantage"—the point at which a quantum computer can solve a real-world problem significantly faster or more accurately than the best-known classical computer. By building tools that lower the barrier to entry, Horizon aims to empower a generation of developers to explore solutions for intractable problems in fields like drug discovery, materials science, and financial modeling.

This software-first strategy positions Horizon as a key enabler in the quantum ecosystem. As hardware continues to improve, the demand for powerful, accessible software to run on it is expected to explode. The new, experienced leadership team is tasked with ensuring Horizon Quantum is ready to meet that demand, build trust with enterprise customers, and navigate the long road from theoretical promise to profitable application.