January 2017

Investor Presentation

Safe Harbor

This presentation may contain forward-looking statements and management may make additional forward-looking statements in response to your

questions. These statements are made under the ''safe harbor'' provisions of the U.S. Private Securities Litigation Reform Act of 1995. These forward-

looking statements can be identified by terminology such as “will,” “expects,” “anticipates,” “future,” “intends,” “plans,” “believes,” “estimates” and

similar statements. Statements that are not historical facts, including statements concerning our beliefs, forecasts, estimates and expectations, are

forward-looking statements. Forward-looking statements involve inherent risks and uncertainties that could cause actual results to differ materially

from those projected or anticipated, including risks related to: the risk that our results of operations are cyclical and may fluctuate from period to

period; the risk that we rely on a small number of customers for a significant portion of our revenue; the risk that the industries in which we

participate are highly competitive and other risks outlined in our public filings with the Securities and Exchange Commission, including as set forth

under “Risk Factors”, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and elsewhere in our most recent

Quarterly Report on Form 10-Q and Annual Report on Form 10-K filed with the Securities and Exchange Commission. The forward-looking statements

made in this presentation relate only to events or information as of the date on which the statements are made in this presentation. Except as

required by law, we undertake no obligation to update or revise publicly any forward-looking statements, whether as a result of new information,

future events or otherwise, after the date on which the statements are made or to reflect the occurrence of unanticipated events.

Management uses non-GAAP net income and non-GAAP net income per diluted share to evaluate the Company's operating and financial results. The

Company believes the presentation of non-GAAP results is useful to investors for analyzing our core business and business trends and comparing

performance to prior periods, along with enhancing investors' ability to view the Company's results from management's perspective. The

presentation of this additional information should not be considered a substitute for results prepared in accordance with GAAP. Tables presenting

reconciliations of non-GAAP results to U.S. GAAP results are included in the Appendix.

2

Non-GAAP

Q4’16 Revenue Guidance Update: approximately $173M vs. $146M - $151M

3 Main Drivers for 2017

– 2017 WFE spending to increase 6% by 3D NAND & node transitions in 10nm Logic & 1x DRAM

– Our primary customers are concentrated in Deposition & Etch; fastest growing areas of WFE

– High OEM factory capacity utilization is driving a strong push for expanded outsourcing

• Share gain opportunities for the strongest suppliers with the broadest capabilities

• Ability to manufacture major modules across the customer’s entire tool is fueling strong growth

3

UCT Highlights

Leading outsourcing manufacturer for the semiconductor capital equipment industry

Source: Gartner Oct 2016, SEMI WSEMS and UCT estimates

2015

2016(F)

2017(F)

2018(F)

$31.5

$33.6

$35.7 $36.5

4

Wafer Fab Equipment Spending Reaching New Highs

($B)

6%

6%

Source: Gartner Oct 2016

Deposition & Etch Outperforming WFE Market

2016 WFE Estimate: $33.6B

>80%of UCT Semi

Sales

Dep & Etch CapEx Spend 9-10% CAGR 2013 - 2018

Total CapExSpend~6% CAGR 2013 - 2018

Thermal & Implant

5% Deposition23%

Removal27%

Lithography27%

Metrology & Inspection

12%

Other6%

Source: Gartner Oct 2016, SEMI WSEMS and UCT estimates5

OEM Component Suppliers

34%

OEM Integration In-Sourcing

44%

UCT5%

For example: Flex, Celestica, Benchmark, etc.

Specialty Contract Manufacturers

6

Inflection:OEM Outsourcing Accelerating Dramatically

Source: UCT estimates as of Nov 2016.

7

Winning StrategyPrimary Focus on Semiconductors

Broaden CriticalProcess Capabilities

Make StrategicInvestments

Increase UCT Content on Platforms

Deepen Engagementwith Existing Customers & Add New Customers

GAS

FOUNDING CAPABILITY

8

Expanding Critical Capabilities to Capture New Opportunities

Chemical Delivery Sub-Systems

Complete Assemblies

LIQUID DELIVERY

ASSEMBLYINTEGRATION

& TEST

ManufacturedComponents

FRAMES PROTOTYPE MACHINING

MACHININGMETALS

PLASTICMODULES

SHEET METAL FORMING

THERMAL PRODUCTS

9

UCT Expert Outsourcing Partner

MANUFACTURING

INTEGRATION & TESTPROTOTYPING/ DEVELOPMENT

MANUFACTURINGENGINEERING

SUPPLY CHAIN MANAGEMENT

Design for manufacturability (DFM) Partnering with customers for new product requirements Network of global, strategic suppliers Comprehensive new product introduction process Sub-system through full tool integration

10

Now Addressing Major Modules in Semiconductor Equipment

Wafer transfer: 10 – 20% 15 – 30%

Factory Interface

Vacuum Transfer

Process Chamber: 55 – 70% 50 – 75%

Gas Panel: 15 – 20% 0 – 10%

TYPICAL CVD & ETCH TOOL COSTOTHER PROCESS

TOOL TYPES

Source: UCT estimates.

11

UCT Strong Growth in Semiconductor Equipment

Strategy to focus on semiconductor successful• Forecasting >15% revenue increase in 2016

– New module wins

– Strong Etch & CVD markets

• Semi revenue currently represents >90%

• In addition to strong gas panel core business, new modules driving further growth

Non-semi now dominated by Display• Resurgence in display due to OLED and going

forward Gen 10+2012

20132014

20152016(E)

$345$390

$423 $433

$510

(in $M)

($M) Q1’16 Q2’16 Q3’16

Revenue $112.2 $129.8 $146.2

Gross Margin 13.0% 14.7% 16.1%

GAAP Net Income ($3.2) $0.7 $2.6

GAAP Basic & Diluted EPS ($.10) $0.02 $0.08

Non-GAAP* Net Income ($0.0) $3.2 $5.7

Non-GAAP* Diluted EPS ($0.0) $0.10 $0.17

Cash $45.5 $44.1 $47.3

12

Select 2016 YTD Financial Data

*Q3 2016 Non-GAAP excludes: (i) pre-tax charges of $1.4 million for intangible assets amortization costs, $925,000 for executive transition costs, and a favorable $105,000 for the release of a previously accrued expense related to the closure of one of our facilities, offset partially by a corresponding increase in tax expense of approximately $0.6M; and (ii) $1.4 million of income tax expense related to income tax valuation allowances

Revenue Range $145M $165M $185M

Gross Margins 14% - 16% 15% - 17% 16% - 18%

Operating Margins(Non-GAAP*)

4% - 6% 6% - 7% 8% - 10%

13

Leveraging Our Model

* Excludes intangible amortization expense and non-recurring items.

• Outperforming a growing Semiconductor WFE market

• Rapidly expanding opportunities in customer’s major modules

• Delivering what customers need (OTD, quality, cost)

• Industry trends reinforce leading position as potential supply chain consolidator

• Key partner to top customers

14

Compelling UCT Opportunity

WinningStrategy

StrongMargins

Improving Profitability

Solid Cash Generation

Thank You

16

Reconciliation: GAAP Net Income to Non-GAAP Net Income

(1) Amortization of intangible assets related to the Company's acquisitions of AIT, Marchi and Miconex

(2) Represents expense for termination benefits paid to former executives of the Company

(3) Adjustment to previous restructuring reserve related to the abandonment of one of the Company's facilities

(4) Costs incurred related to the acquisition of Marchi and Miconex

(5) Tax effect on amortization of intangible assets, executive transition costs, restructuring charges, and acquisition costs based on the non-GAAP tax rate

(6) The Company's GAAP tax expense is substantially higher than the Company's non-GAAP tax expense, primarily due to losses in the U.S. with full federal and state valuation allowances. The Company's non-GAAP tax

rate and resulting non-GAAP tax expense considers the tax implications as if there was no federal or state valuation allowance position in effect

(in thousands)

Three months ended:

Sept. 25, 2015

Three months ended:

Mar 25, 2016Three months ended:

June 24, 2016Three months ended:

Sept. 23, 2016

Reported net income on a GAAP basis $1,676 $(3,239) $723 $2,614

Amortization of intangible assets (1) $1,550 $1,440 $1,440 $1,438

Executive transition costs (2) - - - $925

Restructuring charges (3) - $177 $70 $(105)

Acquisition costs (4) $460 - - -

Income tax effect of non-GAAP adjustments (5) $(563) $(385) $(406) $(574)

Income tax effect of valuation allowance (6) - $1,876 $1,384 $1,391

Non-GAAP net income $3,123 $(131) $3,211 $5,689

17

Reconciliation: GAAP Income from Operations to Non-GAAP Income from Operations

(1) Amortization of intangible assets related to the Company's acquisitions of AIT, Marchi and Miconex

(2) Represents expense for termination benefits paid to former executives of the Company

(3) Adjustment to previous restructuring reserve related to the abandonment of one of the Company's facilities

(4) Costs incurred related to the acquisition of Marchi and Miconex

(in thousands)

Three months ended:

Sept. 25, 2015

Three months ended:

Mar 25, 2016Three months ended:

June 24, 2016Three months ended:

Sept. 23, 2016

Reported income from operations on a GAAP basis $3,079 $(698) $3,719 $6,700

Amortization of intangible assets (1) $1,550 $1,440 $1,440 $1,438

Executive transition costs (2) - - - $925

Restructuring charges (3) - $177 $70 $(105)

Acquisition costs (4) $460 - - -

Non-GAAP income from operations $5,089 $919 $5,229 $8,958

18

Reconciliation: GAAP Earnings Per Diluted Share to Non-GAAP Earnings Per Diluted Share

(1) Amortization of intangible assets related to the Company's acquisitions of AIT, Marchi and Miconex

(2) Represents expense for termination benefits paid to former executives of the Company

(3) Adjustment to previous restructuring reserve related to the abandonment of one of the Company's facilities

(4) Costs incurred related to the acquisition of Marchi and Miconex

(5) Tax effect on amortization of intangible assets, executive transition costs, restructuring charges, and acquisition costs based on the non-GAAP tax rate

(6) The Company's GAAP tax expense is substantially higher than the Company's non-GAAP tax expense, primarily due to losses in the U.S. with full federal and state valuation allowances. The Company's non-GAAP tax rate and resulting non-GAAP tax

expense considers the tax implications as if there was no federal or state valuation allowance position in effect

Three months ended:

Sept. 25, 2015

Three months ended:

March 25, 2016Three months ended:

June 24, 2016Three months ended:

Sept. 23, 2016

Reported net income on a GAAP basis $0.05 $(0.10) $0.02 $0.08

Amortization of intangible assets (1) $0.05 $0.04 $0.05 $0.04

Executive transition costs (2) - - - $0.03

Restructuring charges (3) - $0.01 $0.00 $0.00

Acquisition costs (4) $0.01 - - -

Income tax effect of non-GAAP adjustments (5) $(0.01) $(0.01) $(0.01) $(0.02)

Income tax effect of valuation allowance (6) - $0.06 $0.04 $0.04

Non-GAAP net income $0.10 $(0.00) $0.10 $0.17

Weighted average number of diluted shares (k) 32,155 32,309 32,792 33,100