What changed in this filing

/stocks — the workspaceLOADING

Item 1. Business

2026-03-05 compared with 2025-03-06 · 65 added, 78 removed, 133 unchanged (52% of the section changed)

5 unchanged sentences

OmniMetrix’s PG services provide wireless remote monitoring and control systems and IoT

applications for residential and commercial/industrial power generation equipment.

This includes OmniMetrix’s TrueGuard power

generator monitors and AIRGuard product, which remotely monitors and controls industrial air compressors, and its Smart Annunciator

product, which is typically sold to commercial customers that require a visual representation of the generator’s status and

has a touchscreen display that indicates the current state of that generator.

applications for commercial/industrial and residential power generation equipment.

In 2025, we launched the Omni family of products—the

OmniPro commercial monitor and the Omni residential monitor—built on a new proprietary common communications core called the

OCOM, a platform designed to enhance connectivity, reliability and performance in remote monitoring systems.

These products are replacing

our legacy TrueGuard product lines, offering enhanced flexibility, expandability, and improved connectivity with easier installation.

OmniMetrix also offers the Smart Annunciator product for commercial customers who require a visual representation of generator status

via a touchscreen display.

Protection (“CP”).

3 unchanged sentences

monitor and control rectifiers, test stations and bonds.

OmniMetrix also offers the industry’s first RAD TM (Remote

AC Mitigation Disconnect) that mounts onto existing Solid-state Decouplers in the field and can remotely disconnect/connect these

AC mitigation tools, which can drastically reduce a company’s expense while increasing employee safety.

2024, each of our PG and CP activities represented a reportable segment.

In 2025, we launched the RADex, an OCOM-based expansion of our RAD™

(Remote AC Mitigation Disconnect) that adds cathodic protection measurements while retaining the ability to remotely disconnect/connect

AC mitigation tools on solid-state decouplers, reducing expense and increasing employee safety.

2025 and 2024, each of our PG and CP activities represented a reportable segment.

continually evaluate opportunities related to our activities, and our goal is to maximize shareholder value and position our holdings

17 unchanged sentences

Acorn owns 99% of OmniMetrix, with the remaining 1% owned by OmniMetrix’s former

the emergence of IoT applications whereby companies aggregate multiple sensors and monitors into a simplified dashboard for

customers, OmniMetrix believes it plays a key role in this economic ecosystem within the sectors in which it operates.

continues to see a rapidly growing need for backup power infrastructure to secure critical military, government, and private sector

assets against emergency events including terrorist attacks, natural disasters, other impacts of climate change, demand response and

cybersecurity threats.

Residential and industrial standby generators, turbines, compressors, pumps, pumpjacks, light towers and

other industrial equipment are part of the critical infrastructure increasingly being monitored in IoT applications.

solutions monitor critical equipment used by cell towers, manufacturing plants, medical facilities, data centers, retail stores,

public transportation systems, energy distribution and federal, state and municipal government facilities, in addition to

residential back-up generators.

Given that OmniMetrix monitors all major brands of critical equipment and continues to invest in

research and development in response to customer and potential customer feedback, OmniMetrix is well-positioned to grow its customer

base and expand its product offerings in this market.

the PG segment, OmniMetrix sells a line of devices and services built on our baseline TrueGuard wireless remote monitor.

These devices

are broadly applicable across all brands and models of emergency power generators and industrial engine applications.

The TrueGuard product

family connects directly to the engine’s control panel and captures all data flowing through the control panel.

As a result, the

product provides the ability to identify whether an emergency generator is capable of operating as expected.

OmniMetrix also sells our

AIRGuard product which remotely monitors and controls industrial air compressors and our Smart Annunciator product which is typically

sold to commercial customers that require a visual representation of the generator’s status and has a large touch-screen display.

the CP segment, OmniMetrix offers three primary product lines:

the Hero 2 Rectifier Monitor, the Patriot Plus Test Station Monitor, and

the RAD TM (Remote AC Mitigation Disconnect).

All of these products are used to monitor cathodic protection systems, a process

which reduces rust and corrosion on pipelines used to transport natural gas.

As the name suggests, the Hero 2 Rectifier product monitors

and controls the operation of the rectifiers, which are a critical component in the effort to prevent corrosion and are also the most

common point of failure in the pipeline system.

The Patriot Plus Test Station Monitor is also used to provide data points along the pipeline

segment powered by the rectifier including AC current density.

Additionally, the industry’s first and patented RAD mounts onto

existing Solid-state Decouplers in the field and can remotely disconnect/connect these AC mitigation tools which drastically reduces

company expense while increasing employee safety.

its core, the OmniMetrix family of PG monitors (TrueGuard PRO and TrueGuard 2) can remotely monitor and control a variety of industrial

engine applications, including engines, standby generators, air and gas compressors, fire pumps, batteries, turbines, pumps and other

Early in the company’s history, a strategic decision was made to focus primarily on the standby power generation market.

In the past several years, the company has expanded its focus to add several additional applications where it sees demand.

Standby generator

monitoring is part of the IoT ecosystem, whereby multiple sensing and monitoring devices are aggregated into one simple dashboard for

the emergence of IoT applications whereby companies aggregate multiple sensors and monitors into a simplified dashboard for customers,

OmniMetrix believes it plays a key role in this economic ecosystem within the sectors in which it operates.

OmniMetrix continues to see

a rapidly growing need for backup power infrastructure to secure critical military, government, and private sector assets against emergency

events including natural disasters, other impacts of climate change, demand response, cybersecurity threats and terrorist attacks.

and industrial standby generators, turbines, compressors, pumps, pumpjacks, light towers and other industrial equipment are part of the

critical infrastructure increasingly being monitored in IoT applications.

OmniMetrix solutions monitor critical equipment used by cell

towers, manufacturing plants, medical facilities, data centers, retail stores, public transportation systems, energy distribution and

federal, state and municipal government facilities, in addition to residential back-up generators.

Given that OmniMetrix monitors all

major brands of critical equipment and continues to invest in research and development in response to customer and potential customer

feedback, OmniMetrix is well-positioned to grow its customer base and expand its product offerings in this market.

the PG segment, OmniMetrix sells devices and services built on our OCOM communications platform.

The Omni family—including the

Omni residential monitor and OmniPro commercial monitor—launched in 2025 and is phasing out the legacy TrueGuard product line.

These devices connect directly to generator control panels across all brands and models, capturing operational data to identify whether

emergency power equipment is capable of operating as expected.

OmniMetrix also sells the Smart Annunciator for commercial customers who

require a large touch-screen display of generator status.

the CP segment, OmniMetrix offers the Hero 2 Rectifier Monitor, Patriot Plus Test Station Monitor, and RAD/RADex product family.

products monitor cathodic protection systems that reduce rust and corrosion on natural gas pipelines.

The Hero 2 monitors and controls

rectifiers, the most common point of failure in pipeline systems.

The Patriot Plus provides data points along pipeline segments including

AC current density.

The patented RAD and RADex mount onto existing solid-state decouplers to remotely disconnect/connect AC mitigation

the RADex, launched in 2025 on the OCOM platform, adds cathodic protection measurement capabilities.

January 1, 2026, Acorn Energy entered into a strategic technology partnership with AIO Systems, Ltd.

to expand Acorn’s infrastructure

asset management technology offerings for cell towers, data centers, and utility assets in North America.

Under the agreement, Acorn

has exclusive rights to market, distribute, integrate, and sell AIO’s cloud-based monitoring and analytics solutions under the

OmniMetrix brand in the United States, Canada, and Mexico, significantly expanding Acorn’s product portfolio and addressable market.

The partnership leverages AIO’s globally-deployed technology and provides for shared Software-as-a-Solution (SaaS) and monitoring

revenues, with Acorn expecting a phased rollout and limited near-term revenue contribution as integration and market expansion efforts

its core, the OmniMetrix family of PG monitors can remotely monitor and control a variety of industrial engine applications, including

engines, standby generators, air and gas compressors, fire pumps, batteries, turbines, pumps and other equipment.

Early in the company’s

history, a strategic decision was made to focus primarily on the standby power generation market.

Subsequently,, the company has expanded

its focus to add several additional applications where it sees demand.

Standby generator monitoring is part of the IoT ecosystem, whereby

multiple sensing and monitoring devices are aggregated into one simple dashboard for customers.

OmniMetrix can monitor and control all major brands of standby generators and continues to innovate, it is well-positioned to compete

44 unchanged sentences

These efforts have proven to be successful, and OmniMetrix continues to execute that strategy.

is a vertical market company, deeply focused on providing excellent customer experience and product and service designs for a complete

end-to-end program for its customers.

Having been the first provider of wireless remote monitoring systems for standby generators, the

Company has had the opportunity to mature its offering to a level not offered by others who compete in our two segments.

This long experience

working with key brand and project partners over the years has resulted in product offerings that are highly competitive.

is deeply focused on providing excellent customer experience and product and service designs for a complete end-to-end program for its

Having been the first provider of wireless remote monitoring systems for standby generators, the Company has had the opportunity

to mature its offering to a level not offered by others who compete in our two segments.

This long experience working with key brand

and project partners over the years has resulted in product offerings that are highly competitive.

are two types of competitors in the PG marketplace:

14 unchanged sentences

and numerous industry partner projects.

While the execution of our aggressive sales strategy was interrupted by the impact of COVID-19,

the Company subsequently resumed its comprehensive marketing efforts, developing more sophisticated, diagnostic products and custom solutions

for commercial and industrial clientele and pursuing the market segment that requires less technology and lower price points (the extremely

large and growing residential generator market).

The Company executes an aggressive sales strategy and comprehensive marketing efforts, developing

more sophisticated, diagnostic products and custom solutions for commercial and industrial clientele and pursuing the market segment

that requires less technology and lower price points (the extremely large and growing residential generator market).

the CP marketplace, there are no OEM competitors, but there are several companies that provide monitoring capabilities similar to OmniMetrix

11 unchanged sentences

assurance that its efforts will be successful in all cases.

activities are currently conducted in 21,000 square feet of office and production space in the Hamilton Mill Business Park located in

Buford, Georgia, under a lease that expires September 30, 2025.

On July 6, 2021, the Company entered into an agreement with King Industrial

Realty, Inc., to sublease from the Company 1,900 square feet of unused office space.

The sublease commenced on October 1, 2021 and also

continues through September 30, 2025.

We are currently considering new office space while also discussing potential renewal terms with

our landlord.

of December 31, 2024, OmniMetrix had a backlog of $4.2 million, primarily comprised of deferred revenue, of which $3.5 million is expected

to be recognized as revenue in 2025.

This compares to a backlog of $5.6 million at December 31, 2023.

Since September 1, 2023, OmniMetrix

recognizes revenue, COGS and commissions from the sale of the new version of its hardware products sold when the product is shipped rather

than over the estimated time that the unit is in service for the customer which is the reason for the decrease in the backlog.

See discussion

under Results of Operations under Item 7 below.

expense recorded for the years ended December 31, 2025 and 2024 for our OmniMetrix subsidiary is as follows (amounts in thousands of

6 unchanged sentences

engineering and information technology.

of OmniMetrix’s 26 employees are engaged in production, engineering and technical support, eight in marketing and sales and five

of OmniMetrix’s 27 employees are engaged in production, engineering and technical support, eight in marketing and sales and six

in finance and IT.

19 unchanged sentences

Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.

What changed 10-K

Item 1. Business