Ducommun Incorporated : December Presentation

Investor Presentation

December 2020

Disclosures

Forward-LookingStatements: This presentation contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements may be preceded by, followed by or include the words "believes," "expects," "anticipates," "intends," "plans," "estimates" or similar expressions. These statements are based on the beliefs and assumptions of our management. Generally, forward-looking statements include information concerning our possible or assumed future actions, events or results of operations. Forward-looking statements specifically include, without limitation, the information in this presentation regarding: projections; efficiencies/cost avoidance; cost savings; forward loss reserves; income and margins; earnings per share; growth; economies of scale; the macro economy; capital expenditures; future financing needs; future acquisitions and dispositions; litigation; potential and contingent liabilities; management's plans; and integration related expenses.

Although we believe that the expectations reflected in the forward-looking statements are based on reasonable assumptions, these forward-looking statements are subject to numerous factors, risks and uncertainties that could cause actual outcomes and results to be materially different from those projected. We cannot guarantee future results, performance or achievements. Moreover, neither we nor any other person assumes responsibility for the accuracy and completeness of the forward-looking statements. All written and oral forward-looking statements made in connection with this presentation that are attributable to us or persons acting on our behalf are expressly qualified in their entirety by "Risk Factors" and other cautionary statements included herein.

The information in this presentation is not a complete description of our business or the risks. There can be no assurance that other factors will not affect the accuracy of these forward-looking statements or that our actual results will not differ materially from the results anticipated in such forward-looking statements. Factors that could cause actual results to differ materially from those estimated by us include, but are not limited to, those factors or conditions described under "Risk Factors" in the Annual Report on Form 10-K for the year ended December 31, 2019 and the following: our ability to manage and otherwise comply with our covenants with respect to our outstanding indebtedness; our ability to service our indebtedness; our end-use markets are cyclical; we depend upon a selected base of industries and customers; a significant portion of our business depends upon U.S. Government defense spending; we are subject to extensive regulation and audit by the Defense Contract Audit Agency; contracts with some of our customers contain provisions which give the customers a variety of rights that are unfavorable to us; further consolidation in the aerospace industry could adversely affect our business and financial results; our ability to successfully make acquisitions or enter into joint ventures, including our ability to successfully integrate, operate or realize the projected benefits of such businesses; we rely on our suppliers to meet the quality and delivery expectations of our customers; we use estimates when bidding on fixed-price contracts which estimates could change and result in adverse effects on our financial results; the impact of existing and future laws and regulations; the impact existing and future accounting standards and tax rules and regulations; environmental liabilities could adversely affect our financial results; cyber security attacks, internal system or service failures may adversely impact our business and operations; and other risks and uncertainties.

We caution the reader that undue reliance should not be placed on any forward-looking statements, which speak only as of the date of this presentation. We do not undertake any duty or responsibility to update any of these forward-looking statements to reflect events or circumstances after the date of this presentation or to reflect actual outcomes.

Non-GAAPFinancial Measures: This presentation includes certain non-GAAP financial measures, such as EBITDA and free cash flow. For a reconciliation of such non-GAAP financial measures to the closest GAAP measure as well as why management believes these measures are useful, see "Non-GAAP Financial Measures" in the Appendix of this presentation.

Other: The inclusion of information in this presentation does not mean that such information is material or that disclosure of such information is required.

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Our Rich History

1848

California becomes part of the United States

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1849		1950s		2000s
Founded by		Becomes largest		Expanded into
Charles L. Ducommun		metals materials		engineered
as a watch business,		supplier to the		products through
then general store		aerospace industry		acquisitions
during Gold Rush years		in SoCal

1930s	1960s	2017-
Provides aircraft	Diversifies into	Sharpens
aluminum to	distribution of	strategic focus
aerospace pioneers	electronic	on A&D, and
Lindbergh, Douglas	components to the	streamlines
and Lockheed	aerospace industry	organization

Company Snapshot

Manufacturer of complex electronics and structural systems for commercial aerospace and military, defense and space programs

Extensive Offerings	Diverse Content on	Expansive Footprint
on Commercial and	Key Missile Platforms	for Commercial and
Military Fixed Wing Aircraft	Land, Sea and Air	Military Rotary Aircraft

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