Tower Semiconductor (TSEM) and Xanadu deepen photonic quantum computing collaboration

Rhea-AI Filing Summary

Tower Semiconductor filed a Form 6-K describing an expanded strategic collaboration with Canadian quantum computing company Xanadu to advance photonic quantum hardware. The partners are co-developing advanced silicon photonics for fault-tolerant quantum computers using Tower’s high-volume silicon photonics platform.

The companies have already completed multiple joint design tapeouts and have co-engineered a custom material stack tailored to Xanadu’s architecture. This stack is intended to support scalability and performance as quantum systems grow in complexity, helping move Xanadu’s hardware from concept to prototype and demonstrator systems in a manufacturable environment.

Current work focuses on optimizing critical components, including ultra-low loss silicon nitride and integrated photodiodes, on Tower’s standard product flows. Tower highlights that this collaboration underscores the breadth of its silicon photonics platform for quantum computing, data centers, telecom, automotive and other advanced applications as the industry progresses toward commercial-scale photonic quantum computing systems.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16

OF THE SECURITIES EXCHANGE ACT OF 1934

For the month of February 2026 No.4

Commission File Number 0-24790

TOWER SEMICONDUCTOR LTD.

(Translation of registrant's name into English)

Ramat Gavriel Industrial Park

P.O. Box 619, Migdal Haemek, Israel 2310502

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☒       Form 40-F ☐

On February 19, 2026, the Registrant and Xanadu Deepen Strategic

Collaboration to Accelerate Photonic Quantum Hardware Innovation

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	TOWER SEMICONDUCTOR LTD.
Date: February 19, 2026	By:	/s/ Nati Somekh
	Name:	Nati Somekh
	Title:	Corporate Secretary

Xanadu and Tower Semiconductor Deepen Strategic Collaboration to Accelerate

Photonic Quantum Hardware Innovation

Strengthening the manufacturing foundation for commercial-scale photonic quantum computing

MIGDAL HAEMEK, Israel, and Toronto, ON, February 19, 2026 - Tower Semiconductor, the leading foundry of high-value analog semiconductor solutions, and Xanadu, a leading photonic quantum computing company, today announced an expansion of their collaboration in developing advanced silicon photonics for fault tolerant quantum computers based on Tower’s high-volume silicon photonics platform. These developments build on prior collaborative technical achievements, including a series of successful joint tapeouts to test and refine Xanadu’s designs on Tower Semiconductor process flows.

Xanadu and Tower have co-engineered a unique production flow for Xanadu’s custom material stack, delivering a manufacturing-aligned, architecture-compatible platform for next-generation photonic quantum hardware. This custom stack is designed to sustain both scalability and performance as systems grow in complexity, meeting the requirements of large-scale quantum information processing.

"Our work with Tower has been instrumental in moving our hardware from concept to prototype to demonstrator systems within a scalable manufacturing environment," said Christian Weedbrook, Founder and CEO of Xanadu. "By combining our architectural breakthroughs, fabrication process engineering and design innovations with Tower's world-class technology and manufacturing expertise, we are building the foundation for a truly useful quantum computer."

“Xanadu is advancing one of the most scalable quantum architectures in the industry, and we’re pleased to deepen our collaboration to support manufacturable scale,” said Dr. Ed Preisler, Vice President and General Manager of RF Business Unit, Tower Semiconductor. “This reinforces the broad applicability of our platform across multiple advanced domains including quantum computing, data centers, telecom and automotive applications.

Current developments focus on optimizing the performance of critical components using standard product flows for ultra-low loss silicon nitride (SiN) and integrated photodiodes. These projects allow Xanadu to validate its cutting-edge photonic circuit designs on an established high-volume manufacturing platform. In addition, as the quantum computing industry advances toward commercial scale systems, this collaboration is set to meet the manufacturability requirements of large-scale photonic quantum computing.

For additional information about Tower Semiconductor’s SiPho technology platform, visit here.

For more information about Xanadu, please visit xanadu.ai.

About Tower Semiconductor

Tower Semiconductor Ltd. (NASDAQ/TASE: TSEM), the leading foundry of high-value analog semiconductor solutions, provides technology, development, and process platforms for its customers in growing markets such as consumer, industrial, automotive, mobile, infrastructure, medical and aerospace and defense. Tower Semiconductor focuses on creating a positive and sustainable impact on the world through long-term partnerships and its advanced and innovative analog technology offering, comprised of a broad range of customizable process platforms such as SiPho, SiGe, BiCMOS, mixed-signal/CMOS, RF CMOS, CMOS image sensor, non-imaging sensors, displays, integrated power management (BCD and 700V), and MEMS. Tower Semiconductor also provides world-class design enablement for a quick and accurate design cycle as well as process transfer services including development, transfer, and optimization, to IDMs and fabless companies. To provide multi-fab sourcing and extended capacity for its customers, Tower Semiconductor currently owns one operating facility in Israel (200mm), two in the U.S. (200mm), and two in Japan (200mm and 300mm) which it owns through its 51% holdings in TPSCo and shares a 300mm facility in Agrate, Italy with STMicroelectronics. For more information, please visit: www.towersemi.com.

Safe Harbor Regarding Forward-Looking Statements

This press release includes forward-looking statements, which are subject to risks and uncertainties. Actual results may vary from those projected or implied by such forward-looking statements. A complete discussion of risks and uncertainties that may affect the accuracy of forward-looking statements included in this press release or which may otherwise affect Tower’s business is included under the heading “Risk Factors” in Tower’s most recent filings on Forms 20-F, F-3, F-4 and 6-K, as were filed with the Securities and Exchange Commission (the “SEC”) and the Israel Securities Authority. Tower does not intend to update, and expressly disclaim any obligation to update, the information contained in this release. 

About Xanadu: Xanadu is a Canadian quantum computing company with the mission to build quantum computers that are useful and available to people everywhere. Founded in 2016, Xanadu has become one of the world's leading quantum hardware and software companies. The company also leads the development of PennyLane, an open-source software library for quantum computing and application development. Visit xanadu.ai or follow us on X @XanaduAI.

###

Tower Semiconductor Company Contact:  Orit Shahar | +972-74-7377440 | oritsha@towersemi.com

Tower Semiconductor Investor Relations Contact:  Liat Avraham | +972-4-6506154 | liatavra@towersemi.com

Xanadu media contact: press@xanadu.ai

FAQ

What did Tower Semiconductor (TSEM) announce in this Form 6-K?

Tower Semiconductor reported an expanded collaboration with Xanadu to develop advanced photonic quantum hardware. The companies are co-engineering silicon photonics and a custom material stack on Tower’s high-volume manufacturing platform to support scalable, fault-tolerant quantum computers and future commercial-scale quantum systems.

How are Tower Semiconductor (TSEM) and Xanadu working together on quantum computing?

Tower Semiconductor and Xanadu are jointly developing silicon photonics for fault-tolerant quantum computers using Tower’s SiPho platform. They have completed several joint tapeouts, co-designed a custom material stack and are optimizing ultra-low loss silicon nitride and integrated photodiodes for large-scale photonic quantum computing.

Why is the Tower Semiconductor–Xanadu collaboration important for photonic quantum hardware?

The collaboration is important because it links Xanadu’s quantum architecture and designs with Tower’s established high-volume manufacturing. Their custom material stack and optimized components aim to maintain performance as system complexity grows, supporting the transition from prototypes to manufacturable, commercial-scale photonic quantum computers.

Which technologies from Tower Semiconductor (TSEM) are used in the Xanadu partnership?

The partnership builds on Tower’s silicon photonics platform, including ultra-low loss silicon nitride and integrated photodiodes. These technologies are integrated into a co-engineered material stack designed for Xanadu’s quantum architecture, aligning advanced photonic circuits with established semiconductor manufacturing flows and capacity.

What broader markets does Tower Semiconductor link to its quantum collaboration with Xanadu?

Tower Semiconductor notes that its silicon photonics platform, demonstrated in the Xanadu collaboration, is applicable across several advanced domains. These include quantum computing, data centers, telecom and automotive applications, reflecting the versatility of its high-value analog and photonic process technologies and design capabilities.

Where are Tower Semiconductor’s main manufacturing facilities that support these technologies?

Tower Semiconductor operates one 200mm fab in Israel, two 200mm fabs in the United States and two fabs in Japan, including a 300mm facility via TPSCo. It also shares a 300mm facility in Agrate, Italy, providing multi-fab sourcing and extended capacity for customers.