Sam DeMarco (Allegheny County Councilman – At Large) - Sept. 4, 2024 rally event

Highlights from remarks by Sam DeMarco, Allegheny County Councilman – At Large, during a Sept. 4, 2024, employee rally supporting the proposed transaction with Nippon Steel.

Length: 00:00:58

Rob Kopf (U. S. Steel VP) - Sept. 4, 2024 rally event

Highlights from remarks by Rob Kopf, VP of Sales at U. S. Steel, during a Sept. 4, 2024, employee rally supporting the proposed transaction with Nippon Steel.

Length: 00:01:11

Strategic investment update: Big River 2, August 2024

Length: 00:01:45

Mark Yezovich (U. S. Steel Mon Valley Works Shift Manager) - Sept. 4, 2024 rally event

Highlights from remarks by Mark Yezovich, Shift Manager - Maintenance at U. S. Steel's Mon Valley Works - Edgar Thomson Plant, during a Sept. 4, 2024, employee rally supporting the proposed transaction with Nippon Steel.

Length: 00:01:00

Chris Kelly (Mayor, West Mifflin, PA) - Sept. 4, 2024 rally event

Highlights from remarks by Chris Kelly, Mayor of West Mifflin, PA, during a Sept. 4, 2024, employee rally supporting the proposed transaction with Nippon Steel.

Length: 00:00:58

U. S. Steel and Nippon Steel Partnership Keeps Steel in the Steel City

Length: 00:00:33

Scott Buckiso (U. S. Steel SVP) - Sept. 4, 2024 rally event

Highlights from remarks by Scott Buckiso, SVP & Chief Manufacturing Officer of the North American Flat-Rolled Segment at U. S. Steel, during a Sept. 4, 2024, employee rally supporting the proposed transaction with Nippon Steel.

Length: 00:01:05

Highlights: #BestDealForUSSteel rally

Highlights from the #BestDealForUSSteel U. S. Steel employee rally in support of the proposed Nippon Steel transaction - Sept. 4, 2024

Length: 00:01:46

U. S. Steel employee rally in support of proposed Nippon Steel transaction - Sept. 4, 2024

Length: 00:33:01

Military Makeover - Operation Career

U. S. Steel is featured on “Military Makeover: Operation Career” in an episode titled “Forging New Careers in Steel.” This special episode shares the stories of four military veterans who have transitioned to fulfilling careers with U. S. Steel, bringing their dedication, expertise, and leadership to our team: - Jason Taliaferro, P.E., Director of Sales and President of our SERVE Employee Resource Group, shares how 23 years of military service influence his approach to safety and company culture. - Tyna Hall, multi-equipment operator at our Minnesota Ore Operations’ Keetac facility, highlights U. S. Steel’s strong support for veterans. - Terry Carter, Senior Manager of Safety and Security at Gary Works, discusses the parallels between military and corporate safety cultures. - Raymond Tarnow, Safety Manager at Big River Steel, reflects on how military training has shaped his career trajectory.

Length: 00:19:41

Strategic investment update: Big River 2, August 2024

Length: 00:01:45

Steel Stories by U. S. Steel - Safety First: Now and Forever

Join Dave Burritt as he sits down with Lorraine Martin, President and CEO of the National Safety Council to discuss the evolution of safety practices within the steel industry and throughout American society. Starting from historical tragedies like the Triangle Shirtwaist Factory fire to today's advanced safety technologies, Lorraine highlights the significance of safety in various industries, even sharing her own experience in the aerospace sector. This episode explores how innovative technologies like AI and sensors are revolutionizing safety practices as well as the broader concept of worker well-being and the need for a holistic approach that includes mental health and a supportive work environment. Tune in to learn how U. S. Steel and the National Safety Council are forging a safer future for all.

Length: 00:23:33

Steel Stories by U. S. Steel Podcast - The Best Deal: U. S. Steel and Nippon Steel Unite

CEO Dave Burritt and Nippon Steel's Representative Director and Vice Chairman Takahiro Mori talk about the strategic alliance between U. S. Steel and Nippon Steel. Find out how this pending partnership is set to reshape the industry and secure a brighter future for all. CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS This press release contains information regarding U. S. Steel and Nippon Steel that may constitute “forward-looking statements,” as that term is defined under the Private Securities Litigation Reform Act of 1995 and other securities laws, that are subject to risks and uncertainties. We intend the forward-looking statements to be covered by the safe harbor provisions for forward-looking statements in those sections. Generally, we have identified such forward-looking statements by using the words “believe,” “expect,” “intend,” “estimate,” “anticipate,” “project,” “target,” “forecast,” “aim,” “should,” “plan,” “goal,” “future,” “will,” “may” and similar expressions or by using future dates in connection with any discussion of, among other things, statements regarding the proposed transaction, including the timing of the completion of the transaction. However, the absence of these words or similar expressions does not mean that a statement is not forward-looking. Forward-looking statements include all statements that are not historical facts, but instead represent only U. S. Steel’s beliefs regarding future goals, plans and expectations about our prospects for the future and other events, many of which, by their nature, are inherently uncertain and outside of U. S. Steel’s or Nippon Steel’s control and may differ, possibly materially, from the anticipated events indicated in these forward-looking statements. Management of U. S. Steel or Nippon Steel, as applicable, believes that these forward-looking statements are reasonable as of the time made. However, caution should be taken not to place undue reliance on any such forward-looking statements because such statements speak only as of the date when made. In addition, forward looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from U. S. Steel’s or Nippon Steel’s historical experience and our present expectations or projections. Risks and uncertainties include without limitation: the ability of the parties to consummate the proposed transaction on a timely basis or at all; the timing, receipt and terms and conditions of any required governmental and regulatory approvals of the proposed transaction; the occurrence of any event, change or other circumstances that could give rise to the termination of the definitive agreement and plan of merger relating to the proposed transaction (the “Merger Agreement”); the risk that the parties to the Merger Agreement may not be able to satisfy the conditions to the proposed transaction in a timely manner or at all; risks related to disruption of management time from ongoing business operations due to the proposed transaction; certain restrictions during the pendency of the proposed transaction that may impact U. S. Steel’s ability to pursue certain business opportunities or strategic transactions; the risk that any announcements relating to the proposed transaction could have adverse effects on the market price of U. S. Steel’s common stock or Nippon Steel’s common stock or American Depositary Receipts; the risk of any unexpected costs or expenses resulting from the proposed transaction; the risk of any litigation relating to the proposed transaction; the risk that the proposed transaction and its announcement could have an adverse effect on the ability of U. S. Steel or Nippon Steel to retain customers and retain and hire key personnel and maintain relationships with customers, suppliers, employees, stockholders and other business relationships and on its operating results and business generally; and the risk the pending proposed transaction could distract management of U. S. Steel. U. S. Steel directs readers to its Quarterly Report on Form 10-Q for the quarter ended September 30, 2023 and Form 10-K for the year ended December 31, 2023, and the other documents it files with the SEC for other risks associated with U. S. Steel’s future performance. These documents contain and identify important factors that could cause actual results to differ materially from those contained in the forward-looking statements.

Length: 00:30:47

Keetac DR-grade pellet plant investment - Ribbon-cutting celebration, May 23, 2024

Length: 00:01:56

Strategic project update - Keetac DR-grade pellet facility

Length: 00:02:39

First shipment of direct reduced (DR)-grade pellets at U. S. Steel's Keetac facility - May 7, 2024

The team at U. S. Steel's Keetac facility celebrated the first shipment of direct reduced (DR)-grade pellets on May 7, 2024, following a $150 million investment to add those pellet-making capabilities to the existing operation. Construction was completed in late 2023 on time and on budget, and the first shipment met the project's stated goal of second quarter 2024.

Length: 00:00:34

A message to our employees on World Steel Association's 2024 Day for Safety and Health

Length: 00:00:55

And U. S. Steel's United by Service 2023 "Volunteer of the Year" is ...

U. S. Steel's United by Service employee volunteerism initiative announced its "Volunteer of the Year" for 2023: Tyrell Anderson, an Operational Excellence Engineer at our Gary Works in Gary, Indiana. Hear more about Tyrell's story from leaders at U. S. Steel's Gary Works, members of his family, and leaders and volunteers at the organization he founded - Decay Devils.

Length: 00:03:00

WTAE Bridges to Good Works Employee Volunteers

Length: 00:01:01

Ethisphere names U. S. Steel one of the "World's Most Ethical Companies" for 2024

Length: 00:00:45

My U. S. Steel Experience - Chirag

For Chirag Mahimkar, a Quality and Product Development Manager at U. S. Steel’s Big River Steel facility, building strong relationships is not just about collaborating with customers; it is also about being part of a team. Chirag feels privileged to work at a company that makes environmental stewardship, accountability, and teamwork priorities and alongside experienced mentors and highly skilled operators from whom he regularly learns new things as they focus on achieving common goals. Learn more about Chirag in this continuing video series.

Length: 00:01:44

My U. S. Steel Experience - Justin

Opportunities take many forms at U. S. Steel – just ask Justin Calderone, a Shift Manager at our Mon Valley Works - Irvin Plant near Pittsburgh, PA. In his nearly 12 years with us, Justin’s opportunities have come in the form of job advancement, family-sustaining wages and benefits, and a donation from the company to his family’s foundation in recognition of his outstanding community service. Hear from Justin about his career journey and why the company’s support for volunteerism means so much to him in this continuing series.

Length: 00:01:42

My U. S. Steel Experience - Erika

Erika Chan, General Manager of Sustainability, discusses her transition from Silicon Valley to steel, our company's sustainability journey, and how our employees are central to creating a future that is truly Best for All(R).

Length: 00:01:32

My U. S. Steel Experience – Chad

Hear more from Chad, who is a Senior Area Manager at our Minnesota Ore Operations mining facility and a chapter lead for the plant's veterans employee resource group called SERVE. In this video, Chad talks about the role safety and environmental stewardship play in his daily responsibilities, and how the SERVE ERG is continuing a long company legacy of supporting our nation's active-duty and veteran service members.

Length: 00:01:27

My U. S. Steel Experience - Alana

Hear more from Alana, who is a member of U. S. Steel's Financial Planning & Analysis team and President of our NextGen Steel employee resource group, about her experience as part of the U. S. Steel team.

Length: 00:01:14

Plant Employees

Employees working at the U. S. Steel Gary Works pig iron caster.

Liquid Iron

A ladle of molten iron is poured into a Basic Oxygen Process (BOP) furnace where it will be transformed into liquid steel.

Finished Steel Coils

Finished coils at our Irvin Plant, part of the Mon Valley Works.

Steel Slabs

A slab of steel moves through the hot strip mill. Slabs start this process several inches thick and are rolled into sheet steel that is fractions of an inch thick.

Electric Arc Furnace

An electric arc furnace at U. S. Steel Big River Steel Works.

Iron Ore

Finished iron ore pellets, are pictured at the Minnesota Ore Operations. The pellets are sent to U. S. Steel’s facilities to be used for steelmaking.