HII Debuts GRIMM Spectrum Dominance Solution at AOC 2025 International Symposium & Convention

Rhea-AI Summary

HII (NYSE: HII) deployed and operationalized GRIMM, a next-generation spectrum dominance solution for rapid detection and geolocation of hostile communications, radar and electronic threats. The Mission Technologies division is showcasing GRIMM at the AOC 2025 International Symposium & Convention in National Harbor, Maryland on Dec. 8, 2025. GRIMM is field-proven on unmanned platforms for passive and active electromagnetic warfare missions and is positioned for military operations, counterterrorism, border security, ISR, and RF-enabled cyber operations.

The company highlighted GRIMM's small form factor, multi-domain mission support, and deployment with defense customers worldwide.

News Market Reaction

+3.71%

1 alert

+3.71% News Effect

On the day this news was published, HII gained 3.71%, reflecting a moderate positive market reaction.

Data tracked by StockTitan Argus on the day of publication.

Market Reality Check

Price: $397.77 Vol: Volume 630,965 is about 1...

normal vol

$397.77 Last Close

Volume Volume 630,965 is about 1.5x the 20-day average of 419,443, indicating elevated trading interest ahead of this announcement. normal

Technical Shares at $304.58 are trading above the 200-day MA of $251.36 and sit 7.7% below the 52-week high of $329.9999.

Peers on Argus

HII fell 3.58% while key defense peers like AVAV (-2.93%), KTOS (-1.53%), DRS (-...

HII fell 3.58% while key defense peers like AVAV (-2.93%), KTOS (-1.53%), DRS (-1.19%), ERJ (-0.54%) and WWD (-0.07%) also traded lower, but momentum scanners did not flag a coordinated sector move, suggesting today’s action is more stock-specific.

Historical Context

5 past events · Latest: 2025-12-04 (Positive)

Pattern 5 events

Date	Event	Sentiment	Move	Catalyst
2025-12-04	University partnership	Positive	+2.1%	Joined engineering school partners program to support emerging defense technologies.
2025-12-04	Ship keel ceremony	Positive	+2.1%	Announced keel laying event for Virginia-class submarine Barb (SSN 804).
2025-11-21	Destroyer sea trials	Positive	+1.2%	Completed acceptance trials confirming DDG 128 mission capabilities.
2025-11-21	Submarine delivery	Positive	+1.2%	Delivered Virginia-class submarine Massachusetts (SSN 798) to U.S. Navy.
2025-11-04	USV partnership	Positive	-0.5%	Showcased ROMULUS unmanned surface vessel partnership at Indo Pacific 2025.

Pattern Detected

Recent HII news on ship deliveries and partnerships has generally been followed by modest positive price reactions, with only one partnership headline coinciding with a small decline.

Recent Company History

Over the last few weeks, HII has reported multiple operational milestones and partnerships. On 2025-11-21, it both completed acceptance trials for destroyer DDG 128 and delivered Virginia-class submarine Massachusetts (SSN 798), each coinciding with about a 1.21% gain. Partnerships with the University of Maryland on 2025-12-04 and Incat Crowther on 2025-11-04 highlighted unmanned and autonomy-focused initiatives, with one drawing a 2.15% lift and the other a modest -0.52% pullback. Today’s GRIMM spectrum dominance debut fits this pattern of tech- and capability-focused updates.

Market Pulse Summary

This announcement highlights HII’s GRIMM spectrum dominance solution, emphasizing rapid detection of...

Analysis

This announcement highlights HII’s GRIMM spectrum dominance solution, emphasizing rapid detection of hostile communications and support for electromagnetic warfare and unmanned operations. It extends a recent series of updates on ship deliveries, submarine milestones, and autonomy-focused partnerships over November–December 2025. Investors may focus on how broadly GRIMM is adopted across defense customers, the role it plays in multi-domain operations, and whether future disclosures tie these capabilities to identifiable contract awards or backlog growth.

Key Terms

spectrum dominance, electromagnetic warfare, intelligence, surveillance and reconnaissance, rf-enabled, +2 more

6 terms

spectrum dominance technical

"next-generation high-performance spectrum dominance solution, now available for rapid"

Spectrum dominance is a company's commanding position over access to and effective use of parts of the electromagnetic spectrum used for wireless communications, often achieved through licenses, technology, network deployment, or exclusive agreements. Like owning the best lanes on a congested highway, it lets a firm carry more data more reliably, win customers and partners, charge premium rates or block rivals, and therefore materially affects future revenue, investment needs and regulatory scrutiny—key factors for investors.

electromagnetic warfare technical

"developing electromagnetic warfare technology for national defense."

Electromagnetic warfare is the use of radio waves and other parts of the electromagnetic spectrum to disrupt, deceive, or defend against sensing, communications, and weapons systems—think of it as jamming, blinding or spoofing an opponent’s electronic “ears” and “eyes.” For investors, it matters because companies that make or sell these systems supply military and security customers, face regulatory and export rules, and can win or lose contracts based on performance and technological leadership, affecting revenue and risk.

intelligence, surveillance and reconnaissance technical

"including military operations; counterterrorism and counternarcotics; intelligence, surveillance and reconnaissance;"

Intelligence, surveillance and reconnaissance (ISR) are the activities and systems used to gather information about people, places and events—like a combination of watching with cameras and sensors, collecting clues, and making sense of them to know what is happening or likely to happen. Investors care because ISR drives demand for specialized equipment, software and services and affects national security spending and risk assessments; companies involved can see steady contracts, technology-driven growth, or heightened scrutiny depending on geopolitical developments.

rf-enabled technical

"electromagnetic warfare (EW) and RF-enabled cyberspace operations."

RF-enabled means a product or system includes radio-frequency hardware and software that lets it send or receive data wirelessly over the air—examples include Wi‑Fi, Bluetooth, NFC and RFID. For investors, RF capability can broaden a product’s market and unlock recurring services or data-driven features, but it also introduces costs, certification requirements, and potential regulatory or interference risks similar to adding a built‑in radio antenna to a device.

unmanned systems technical

"solution enabling operations on unmanned systems."

Unmanned systems are machines that operate without a person on board, such as drones, robotic vehicles, or stationary automated platforms controlled remotely or operating autonomously. Investors care because these systems can open new markets, cut labor and operating costs, and face unique regulatory, safety and technology risks—think of them as robotic helpers that can boost productivity but whose value depends on rules, reliability and customer adoption.

big data technical

"span a variety of technology areas — from AI and Big Data to rapid prototyping"

Extremely large and fast-growing collections of information from many sources—like transaction records, sensors, customer interactions and online activity—that are too big or messy for traditional spreadsheets. Investors care because analyzing this volume of data can reveal hidden trends, customer behavior, cost savings and risks faster than before, helping companies make better decisions, target growth, cut waste and gain an edge over competitors.

AI-generated analysis. Not financial advice.

McLEAN, Va., Dec. 08, 2025 (GLOBE NEWSWIRE) -- HII (NYSE: HII) announced today that its Mission Technologies division has deployed and operationalized a next-generation high-performance spectrum dominance solution, now available for rapid detection and location of hostile communications, radar and other electronic threats.

HII will showcase its GRIMM® technology — and its field-proven capabilities in situational awareness, intelligence support and force protection — at the Association of Old Crows’ 2025 International Symposium & Convention at National Harbor, Maryland.

GRIMM® leverages decades of HII expertise developing electromagnetic warfare technology for national defense. Now deployed with mission success across a range of defense customers, it stands as a testament to HII’s commitment to innovation and operational excellence.

“GRIMM® is a proven strategic asset for the U.S. military and its allies — and it is available now,” said Andy Green, executive vice president of HII and president of Mission Technologies. “Mission success requires a multi-domain, fully capable solution that provides the agility and precision our forces need to protect national interests worldwide, and GRIMM is delivering that capability today.”

GRIMM can fulfill a variety of missions, including military operations; counterterrorism and counternarcotics; intelligence, surveillance and reconnaissance; border security; and electromagnetic warfare (EW) and RF-enabled cyberspace operations. To date, the system has been deployed on unmanned platforms for both passive and active EW missions.

An image accompanying this release is available at: https://hii.com/news/hii-debuts-grimm-spectrum-dominance-solution-at-aoc-2025-international-symposium-convention/.

“GRIMM empowers advanced operations across diverse environments around the world, including contested electromagnetic spectrum scenarios,” said Grant Hagen, president of Mission Technologies’ Warfare Systems group. “We are excited to introduce this next evolution of our EW technology, a small form factor spectrum dominance solution enabling operations on unmanned systems.”

HII Mission Technologies’ products support mission readiness in every domain — from land, sea and air to space and cyber — and span a variety of technology areas — from AI and Big Data to rapid prototyping and spectrum engineering.

For more information about GRIMM and Mission Technologies’ other advanced technology products, visit: https://hii.com/what-we-do/products/.

About HII

HII is a global, all-domain defense provider. HII’s mission is to deliver the world’s most powerful ships and all-domain solutions in service of the nation, creating the advantage for our customers to protect peace and freedom around the world.

As the nation’s largest military shipbuilder, and with a more than 135-year history of advancing U.S. national security, HII delivers critical capabilities extending from ships to unmanned systems, cyber, ISR, AI/ML and synthetic training. Headquartered in Virginia, HII’s workforce is 44,000 strong. For more information, visit:

• HII on the web: https://www.HII.com/
• HII on Facebook: https://www.facebook.com/TeamHII
• HII on X: https://www.twitter.com/WeAreHII
• HII on Instagram: https://www.instagram.com/WeAreHII

Contact:

Greg McCarthy
(202) 264-7126
gregory.j.mccarthy@hii-co.com 

A photo accompanying this announcement is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/e8249d66-d3b7-484c-be67-ee2b571424c3

FAQ

What is HII (HII) announcing at the AOC 2025 conference on December 8, 2025?

HII announced the deployment and showcase of its GRIMM spectrum dominance solution for detection and location of electronic threats.

How is GRIMM being used by HII customers and which platforms support it?

GRIMM has been deployed on unmanned platforms for both passive and active electromagnetic warfare missions.

Which missions does GRIMM support according to HII's December 8, 2025 release?

HII says GRIMM supports military operations, counterterrorism, counternarcotics, ISR, border security, EW, and RF-enabled cyberspace operations.

Where can investors see HII's GRIMM demonstration at AOC 2025?

HII is showcasing GRIMM at the Association of Old Crows 2025 International Symposium & Convention in National Harbor, Maryland.

Does HII claim GRIMM is operational now and available to defense customers (HII)?

Yes; HII states GRIMM is deployed, operationalized, and available for rapid detection and location of electronic threats.