Exhibit 99.1

2006 1^st Quarter Results

April 19, 2006

Safe Harbor

“Safe Harbor” Statement under the U.S. Private Securities
Litigation Reform Act of 1995: the matters discussed in this
document may include forward-looking statements that are
subject to risks and uncertainties including, but not limited to:
economic conditions, product demand and semiconductor
equipment industry capacity, worldwide demand and
manufacturing capacity utilization for semiconductors (the
principal product of our customer base), competitive products
and pricing, manufacturing efficiencies, new product
development, ability to enforce patents, the outcome of
intellectual property litigation, availability of raw materials and
critical manufacturing equipment, trade environment, and
other risks indicated in the risk factors included in ASML’s
Annual Report on Form 20-F and other filings with the U.S.
Securities and Exchange Commission.

/ Slide 2

Agenda

Accomplishments

Financial summary

Q2 outlook

Company focus 2006

/ Slide 3

Accomplishments

/ Slide 4

Accomplishments Q1 2006

Solid execution

Gross margin increased to 40.0%

Operating margin grew to 18.2%

Improved our market position

Gained 7^th customer in Japan – will use ASML immersion tools

Net bookings of 62 systems (47 new) with a value of € 710 million

Immersion

Backlog increased to 18 immersion systems with 5 pending orders for
shipment in 2006

First TWINSCAN XT:1700i product qualification completed end of March,
shipped early April to Asia

Produced 42 nm resolution half pitch images on the TWINSCAN XT:1700i

Customers demonstrate low defect immersion processes

/ Slide 5

Financial accomplishments Q1 2006

Robust financial performance

Revenue of € 629 million, 15% increase over Q4 ‘05

Shipped 51 systems (39 new systems)

ASP new systems is € 13.5 million

Net profit of € 80 million (12.7% of sales)

In preparation for major Q2 growth, ASML invested € 219
million cash in operations including a one time tax
payment of € 79 million for prior years

/ Slide 6

Financial summary

/ Slide 7

Total revenues M€

179

609

351

820

526

370

329

318

785

611

616

453

548

533

763

685

629

1959

1543

2465

2529

/ Slide 8

Revenue breakdown: Q1 2006

Value per type

Value per technology

TWINSCAN

86%

Others
14%

Value per region

Value per end-use

Foundry

Memory

57%

IDM

35%

KrF

46%

ArF

50%

i-line

U.S.

27%

Taiwan

19%

Korea

32%

China

Europe

16%

ROW

Numbers have been rounded for readers’ convenience

units

Units

Others

TWINSCAN

i-line

KrF

ArF

/ Slide 9

Profit & Loss statement M€

/ Slide 10

Numbers have been rounded for readers’ convenience

Net sales

2529

685

548

Gross margin

Gross margin %

974

38.5

274

40.0

204

37.3

251

40.0

R&D costs

324

SG&A costs

201

Operating income

Operating income %

449

7.8

144

21.0

13.6

114

18.2

Net income

Net income %

311

12.3

100

14.6

9.4

12.7

Key financial trends 2005 - 2006

/ Slide 11

Numbers have been rounded for readers’ convenience

Profit & Loss Statement

M€

Q1 0

Q2 0

Q3 0

Q4 0

Units

Sales

685

763

533

548

Gross margin

Gross margin %

274

40.0

299

39.1

197

37.0

204

37.3

251

40.0

R&D

SG&A

perating income

Operating

income %

144

21.0

162

21.2

12.9

13.6

114

18.2

Net income

Net income %

100

14.6

112

14.6

9.0

9.4

12.7

Cash flow M€

/ Slide 12

Including payment of Euro 79 Million for prior year taxes

Numbers have been rounded for readers’ convenience

Net income

311

100

Depreciation and amortization

Changes in tax assets and liabilities

(54

)

Effects of changes in inventories

(30)

)

(126)

(16

)

Effects of changes in

other

assets

and

liabilit

ies

233

)

253

(102

)

Cash flow from recurring operations

711

104

210

(219)

Cash flow from investing activities

(61

)

(21)

(

)

(16)

Cash flow from financing activities

Effect of changes in exchange rates on cash

(6)

Net cash flow

676

205

(234)

Backlog as of April 2, 2006

85 % of unit backlog carry Q2 + Q3 2006 shipment dates

Q1 net bookings of 62 systems with a value M€ 710 including
47 new tools with an ASP of M€ 14.3

Note: Due to possible customer changes in delivery schedules and to cancellation of orders, our backlog at any
particular date is not necessarily indicative of actual sales for any succeeding period

Numbers have been rounded for readers’ convenience

New Systems

Used Systems

Total Backlog

M€ 1.560

M€ 36

M€ 1.596

M€ 16.6

M€ 3.0

M€ 15.1

Backlog

106

Units

Value

ASP

/ Slide 13

Current liabilities include as of December 31, 2005 USD 575 million principal amount of ASML’s 5.75 percent
Convertible Subordinated Notes due October 15, 2006. In previous period ends, this was presented under
convertible subordinated bonds.

Balance sheet as of April 2, 2006 M€

/ Slide 14

Numbers have been rounded for readers’ convenience

ASSETS

December

2005

March

200

Cash and cash equivalents

1905

1671

Accounts receivable, net

303

447

Inventories, net

Other assets

164

Tax assets

303

Fixed assets

301

TOTA

L ASSETS

756

100%

380

100%

LIABILITIES and SHAREHOLDERS’ EQUITY

Current liabilities

1420

Convertible subordinated bonds

380

Long term debts

and

deferred liabilities

243

Shareholders’ equity

712

801

TOTAL LIABILITIES & SHAREHOLDERS’ EQUITY

3756

100%

380

100%

Backlog: litho units and value

/ Slide 15

Backlog lithography per April 2, 2006

Total value M€ 1,596

Value per type

Value per technology

TWINSCAN

95%

Others

I-line

ArF dry

43 %

Value per region

Value per end-use

U.S.

31%

Foundry

22%

Memory

49%

Taiwan

21%

IDM

29%

Korea

24%

KrF

25%

ROW

Europe

ArF immersion

29 %

Numbers have been rounded for readers’ convenience

China

Japan

/ Slide 16

Q2 outlook

Shipment of 64 systems expected

ASP for new system shipments expected to be € 14.5 million for
new systems and € 12.3 million for new + refurbished systems

Gross margin expected at 39 – 40%

R&D and SG&A are expected to be € 87 million net of credit and
€ 51 million respectively

ASML expects a sustained level of unit bookings in Q2 similar to
that of Q1, with a Q2 order mix favoring capacity additions in KrF
and i-line systems and shorter order leadtimes

Planning to ship the first EUV Alpha demo tools by mid 2006

Reiterating shipment forecast of 20-25 immersion systems in
2006

/ Slide 17

Share Buyback Program

ASML confirms its intention to execute a share buyback
program in 2006

Company will repurchase up to the equivalent of € 400
million of its own shares over the next 12 months

Purpose of the program is to return excess cash to
shareholders through reduction of the number of issued
shares

/ Slide 18

Company focus 2006

Continue execution of 2005 focus points

Execute on volume production ramp of the TWINSCAN
XT:1700i, hyper NA tool for 45 nm node

Execute on cost of goods reduction

Execute on lead time reduction

Accelerate the technology leadership gap

Ship 2 EUV Alpha demo tools

Finalize development of the >1.3 NA immersion tool for
shipment in H1 2007

Develop alternative architectures for cost effective
lithography at 32 nm resolution and beyond

/ Slide 19

Commitment