EX-99.1 2 q418exhibit991.htm EXHIBIT 99.1 Exhibit

Exhibit 99.1
logoa05.jpg

FOR IMMEDIATE RELEASE

Ultimate Reports Full Year and Q4 2018 Financial Results

Record 2018 Recurring Revenues of $997.1 million, Up by 24%
Record 2018 Total Revenues of $1.14 billion, Up by 21%
Record Q4 Recurring Revenues of $266.4 million, Up by 24%
Record Q4 Total Revenues of $304.8 million, Up by 21%

Weston, FL, February 4, 2019 — Ultimate Software (Nasdaq: ULTI), a leading provider of human capital management (HCM) solutions in the cloud, announced today our financial results for the year ended and fourth quarter ended December 31, 2018. For the year ended December 31, 2018, Ultimate reported recurring revenues of $997.1 million, a 24% increase, and total revenues of $1.14 billion, a 21% increase, both compared with 2017. Our GAAP net income for the full year of 2018 was $65.1 million, or $2.06 per diluted share, as compared with GAAP net income of $14.1 million, or $0.46 per diluted share, for 2017. Net income for the full year of 2017 was $22.9 million, or $0.74 per diluted share, excluding the impact due to the enactment of the federal Tax Cuts and Jobs Act (the “Tax Act”) of $8.8 million.
Non-GAAP net income for 2018 was $186.2 million, or $5.90 per diluted share, as compared with non-GAAP net income for 2017 of $118.1 million, or $3.84 per diluted share.
For the quarter ended December 31, 2018, Ultimate reported recurring revenues of $266.4 million, a 24% increase, and total revenues of $304.8 million, a 21% increase, both compared with 2017's fourth quarter. Our GAAP net income for the fourth quarter of 2018 was $13.4 million, or $0.42 per diluted share, as compared with GAAP net loss of $(2.1) million, or $(0.07) per share, for the fourth quarter of 2017. GAAP net income for the fourth quarter of 2017 was $6.7 million, or $0.22 per diluted share, excluding the impact of the Tax Act of $8.8 million.
Non-GAAP net income for the fourth quarter of 2018 was $62.4 million, or $1.95 per diluted share, as compared with non-GAAP net income for 2017's fourth quarter of $34.2 million, or $1.11 per diluted share. For further discussion of our non-GAAP financial measures, see "Use of Non-GAAP Financial Information" below.
“In 2018, we achieved our Fifth Championship, delivering more than $1 billion in total annual revenues, and we are now focused on our Sixth Championship of $2 billion in 2021. Our customer base has grown to more than 5,600 organizations, and the number of people records in our Ultimate cloud has expanded to more than 48 million. Our customer retention rate remained consistent at approximately 96% on a year-over-year basis in 2018,” said Scott Scherr, founder, president, and CEO. 

“Last month, Fortune and its partner, Great Place to Work, honored Ultimate by ranking us #1 on their list of 50 Best Workplaces in Technology, in the ‘Large Companies’ category. This marks our fourth consecutive year to top this list, and again we thank our people for making this recognition possible. They make our exceptional culture of trust, inclusion, caring, and innovating a day-to-day reality,” added Scherr.

Business Highlights

All events or awards listed below took place in 2018, unless otherwise noted:
Ultimate executed on our global strategy by acquiring PeopleDoc—a pioneer in cloud-based HR service delivery with offices in England, France, Germany, and the United States. The addition of the PeopleDoc HR service delivery platform furthers our mission to enhance our customers’ employee experience by offering new, person-centric features, such as an online employee-help center, HR case management, and employee file management.

Gartner named Ultimate a “Leader” in its 2018 Magic Quadrant for HCM Suites for both Midmarket and Larger Enterprises based on its criteria for ability to execute and completeness of vision.

Nucleus Research recognized Ultimate as a “Leader” in its HCM Value Matrix, for the fourth consecutive year, and awarded Ultimate the top rating for product functionality.




Human Resource Executive magazine identified our AI platform, Xander, as one of the Top HR Products of 2018.

Customer Sales and Service World Awards named our services team the #1 Customer Service Department of the Year for organizations with 2,500 employees or more, across diverse industries.

For culture, Fortune magazine ranked Ultimate #3 on its highly respected 100 Best Companies to Work For list.

And also for culture, Ultimate was ranked #4 on Fortune’s and Great Place to Work’s Best Workplaces for Parents and #5 on their Best Workplaces for Diversity lists. 

Financial Highlights

Recurring revenues from our cloud offering grew by 24% for the fourth quarter of 2018 and by 24% for the 2018 year—both as compared with the same periods in 2017. Recurring revenues were 87% of total revenues for the 2018 year, as compared with 85% of total revenues for the 2017 year.
Ultimate’s total revenues for 2018's fourth quarter increased by 21% versus those for 2017's fourth quarter. Ultimate's total revenues for 2018 increased by 21%, compared with those for 2017.
Ultimate’s annualized retention rate, on a rolling 12-month basis, was approximately 96% for our recurring revenue cloud customer base as of December 31, 2018.
Cash flows from operating activities for the 12 months ended December 31, 2018, were $223.9 million, compared with $214.0 million for the same period of 2017. Our operating cash flow margin for the 12 months ended December 31, 2018, was 19.6%, compared with 22.7% for the same period of 2017. Ultimate’s 2018 cash flow results for both the fourth quarter and for the year include the impact of the PeopleDoc acquisition that closed in late July 2018.
Free cash flows were $143.8 million for the 12 months ended December 31, 2018, compared with $136.4 million for the same period of 2017. Our free cash flow margins were 12.6% for the 12 months ended December 31, 2018, compared with 14.5% for the same period of 2017.
Stock Repurchases
The combination of cash, cash equivalents, and corporate marketable securities was $162.0 million as of December 31, 2018, compared with $165.1 million as of December 31, 2017.
During the 12 months ended December 31, 2018, we used $64.8 million to acquire 276,708 shares of our common stock, $0.01 par value common stock (“Common Stock”) to settle employees’ tax withholding obligations associated with their restricted stock that vested during the period. We have 1,342,005 shares available for repurchase under our Stock Repurchase Plan.
Subsequent Event
On February 4, 2019, the Company announced that it has entered into a definitive merger agreement to be acquired by an investor group led by Hellman & Friedman in an all-cash transaction that values the Company at an aggregate value of approximately $11 billion.  Under the terms of the merger agreement, the Company’s stockholders will receive $331.50 per share in cash upon the closing of the transaction.  The obligation of the parties to complete the merger is subject to customary closing conditions, including, among others, approval by the Company’s stockholders and regulatory approvals. The merger is currently expected to close in the second quarter of 2019.
Conference Call
As a result of the proposed merger, the Company will not host an earnings conference call or provide financial guidance.











2


Forward-Looking Statements
Certain statements in this press release are forward-looking statements within the meaning provided under the Private Securities Litigation Reform Act of 1995. Such forward-looking statements are made only as of the date hereof. These statements involve known and unknown risks and uncertainties that may cause Ultimate’s actual results to differ materially from those stated or implied by such forward-looking statements, including risks and uncertainties associated with fluctuations in Ultimate’s quarterly operating results, concentration of Ultimate’s product offerings, development risks involved with new products and technologies, competition, contract renewals with business partners, compliance by our customers with the terms of their contracts with us, and other factors disclosed in Ultimate’s filings with the Securities and Exchange Commission. Ultimate undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise.
About Ultimate Software
Ultimate is a leading provider of cloud-based human capital management solutions, with more than 48 million people records in the Ultimate cloud. Our award-winning UltiPro delivers HR, payroll, talent, and time and labor management as well as HR service delivery solutions that connect people with the information they need to work more effectively. Founded in 1990, Ultimate is headquartered in Weston, Florida, and employs more than 5,100 professionals. In 2019, Fortune magazine and Great Place to Work ranked Ultimate #1 on their Best Workplaces in Technology list, in the “Large Companies” category, Ultimate’s fourth consecutive year to top the list. In 2018, Fortune ranked Ultimate #3 on its prestigious 100 Best Companies to Work For list, our seventh consecutive year in the top 25; #1 on its 100 Best Workplaces for Women 100 listand #1 on its Best Workplaces for Millennials list, our second year at the top. Customer Sales and Service World Awards recognized Ultimate’s Services team as the #1 Customer Service Department of the Year in 2018 for companies with 2,500 employees or larger across diverse industries, and the National Customer Service Association named Ultimate its Service Organization of the Year in the “Large Business” category in 2017. Ultimate has more than 5,600 customers worldwide including Bloomin’ Brands, Culligan International, Feeding America, Red Roof Inn, SUBWAY, Texas Roadhouse, and Yamaha Corporation of America. More information on Ultimate’s products and services for people management can be found at www.ultimatesoftware.com.
UltiPro is a registered trademark of The Ultimate Software Group, Inc. All other trademarks referenced are the property of their respective owners.

Contact: Mitchell K. Dauerman
EVP, Investor Relations
Phone: 954-331-7369
Email: IR@ultimatesoftware.com

3


THE ULTIMATE SOFTWARE GROUP, INC. AND SUBSIDIARIES
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF INCOME
(In thousands, except per share amounts)

 
For the Three Months Ended December 31,
 
For the Twelve Months Ended December 31,
 
2018
 
2017
 
2018
 
2017
Revenues:
 
 
 
 
 
 
 
Recurring
$
266,443

 
$
214,112

 
$
997,068

 
$
802,300

Services
38,359

 
37,319

 
143,478

 
138,429

Total revenues
304,802

 
251,431

 
1,140,546

 
940,729

Cost of revenues:
 

 
 
 
 

 
 
Recurring
72,434

 
55,394

 
273,165

 
210,560

Services
40,141

 
35,659

 
158,569

 
143,140

Total cost of revenues
112,575

 
91,053

 
431,734

 
353,700

Gross profit
192,227

 
160,378

 
708,812

 
587,029

Operating expenses:
 

 
 
 
 

 
 
Sales and marketing
75,812

 
68,339

 
285,293

 
269,781

Research and development
55,588

 
41,013

 
203,729

 
150,583

General and administrative
37,939

 
30,983

 
139,192

 
122,119

Total operating expenses
169,339

 
140,335

 
628,214

 
542,483

Operating income
22,888

 
20,043

 
80,598

 
44,546

Other income (expense):
 
 
 
 
 

 
 
Interest expense and other, net
(128
)
 
(129
)
 
(693
)
 
(813
)
Other income, net
924

 
34

 
3,456

 
397

Total other income (expense), net
796

 
(95
)
 
2,763

 
(416
)
Income before income taxes
23,684

 
19,948

 
83,361

 
44,130

Provision for income taxes
(10,303
)
 
(22,005
)
 
(18,221
)
 
(30,075
)
Net income (loss)
$
13,381

 
$
(2,057
)
 
$
65,140

 
$
14,055

Net income per share:
 
 
 
 
 
 
 
Basic
$
0.43

 
$
(0.07
)
 
$
2.11

 
$
0.47

Diluted
$
0.42

 
$
(0.07
)
 
$
2.06

 
$
0.46

Weighted average shares outstanding:
 
 
 
 
 
 
 
Basic
31,304

 
30,021

 
30,854

 
29,791

Diluted
31,976

 
30,021

 
31,578

 
30,799


4



Stock-based Compensation, Amortization of Acquired Intangibles, Transaction Costs Related to Business Combinations, and Provisions related to the enactment of the Tax Act

The following table sets forth the stock-based compensation expense resulting from stock-based arrangements (excluding the income tax effect, or “gross”), the amortization of acquired intangibles, transaction costs related to business combinations, and the increase in our provision for income taxes resulting from the reduction of net deferred tax assets in association with the enactment of the Tax Act that are recorded in Ultimate’s unaudited condensed consolidated statements of income for the periods indicated and are included within the Unaudited Reconciliation of Non-GAAP Financial Measures to GAAP Financial Measures in this press release (in thousands):

 
 
For the Three Months Ended December 31,
 
For the Twelve Months Ended December 31,
 
 
2018
 
2017
 
2018
 
2017
Stock-based compensation expense:
 
 
 
 
 
 
 
 
Cost of recurring revenues
 
$
4,489

 
$
3,062

 
$
16,087

 
$
11,931

Cost of services revenues
 
2,357

 
1,975

 
9,472

 
7,909

Sales and marketing
 
18,774

 
18,322

 
71,641

 
75,428

Research and development
 
4,333

 
3,022

 
16,275

 
12,026

General and administrative
 
6,344

 
8,888

 
26,878

 
39,133

Total non-cash stock-based compensation expense
 
$
36,297

 
$
35,269

 
$
140,353

 
$
146,427

 
 
 
 
 
 
 
 
 
Amortization of acquired intangibles:
 
 
 
 
 
 
 
 
General and administrative
 
$
4,856

 
$
785

 
$
10,107

 
$
3,129

Total amortization of acquired intangibles
 
$
4,856

 
$
785

 
$
10,107

 
$
3,129

 
 
 
 
 
 
 
 
 
Transaction costs related to business combinations:
 
 
 
 
 
 
 
 
General and administrative
 
$
90

 
$

 
$
3,059

 
$

Total transaction costs related to business combinations
 
$
90

 
$

 
$
3,059

 
$

 
 
 
 
 
 
 
 
 
Provision for Income Taxes
 
 
 
 
 
 
 
 
Provision for income taxes, related to the Tax Act
 
$

 
$
8,800

 
$

 
$
8,800

Total provision for income taxes
 
$

 
$
8,800

 
$

 
$
8,800


Stock-based compensation expense associated with modifications and terminations made to the Company’s change-in-control plans in March 2015, February 2016 and February 2017, is shown in the table below (in thousands). As previously disclosed, these changes were made to better align management's incentives with long-term value creation for our shareholders. As part of the modifications in connection with the terminations of the change-in-control plans, time-based restricted stock awards (vesting over three years) were granted to certain senior officers in March 2015, February 2016 and February 2017.
 
 
For the Three Months Ended December 31,
 
For the Twelve Months Ended December 31,
 
 
2018
 
2017
 
2018
 
2017
Stock-based compensation expense:
 
 
 
 
 
 
 
 
Stock-based compensation expense
 
$
25,884

 
$
18,239

 
$
96,018

 
81,468

Stock-based compensation expense related to CIC Modifications
 
10,413

 
17,030

 
44,335

 
64,959

Total non-cash stock-based compensation expense
 
$
36,297

 
$
35,269

 
$
140,353

 
$
146,427





5


THE ULTIMATE SOFTWARE GROUP, INC. AND SUBSIDIARIES
UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS
(In thousands, except share data)
 
As of December 31, 2018
 
As of December 31, 2017
ASSETS
 
 
 
Current assets:
 
 
 
Cash and cash equivalents
$
151,247

 
$
155,685

Investments in marketable securities
10,741

 
9,434

Accounts receivable, net
238,768

 
190,989

Deferred contract costs, prepaid expenses and other current assets
90,761

 
71,602

Total current assets before funds held for customers
491,517

 
427,710

Funds held for customers
618,206

 
563,062

Total current assets
1,109,723

 
990,772

Property and equipment, net
302,939

 
243,664

Goodwill
219,904

 
35,808

Intangible assets, net
144,411

 
20,862

Deferred contract costs and other assets, net
129,108

 
53,409

Deferred tax assets, net
14,632

 
32,696

Total assets
$
1,920,717

 
$
1,377,211

LIABILITIES AND STOCKHOLDERS’ EQUITY
 
 
 
Current liabilities:
 
 
 
Accounts payable
$
16,058

 
$
16,099

Accrued expenses and other liabilities
154,383

 
60,394

Deferred revenue
238,940

 
197,088

Capital lease obligations
6,303

 
5,474

Total current liabilities before customer funds obligations
415,684

 
279,055

Customer funds obligations
619,230

 
564,031

Total current liabilities
1,034,914

 
843,086

Deferred revenue
1,009

 
1,773

Deferred rent
8,471

 
5,349

Capital lease obligations
5,739

 
4,477

Other long-term liabilities
500

 
4,250

Deferred income tax liability
25,105

 
251

Total liabilities
1,075,738

 
859,186

 
 
 
 
Stockholders’ equity:
 
 
 
Preferred Stock, $.01 par value

 

Series A Junior Participating Preferred Stock, $.01 par value

 

Common Stock, $.01 par value
360

 
348

Additional paid-in capital
863,030

 
609,160

Accumulated other comprehensive loss
(14,574
)
 
(5,912
)
Accumulated earnings
207,522

 
125,788

 
1,056,338

 
729,384

Treasury stock, at cost
(211,359
)
 
(211,359
)
Total stockholders’ equity
844,979

 
518,025

Total liabilities and stockholders’ equity
$
1,920,717

 
$
1,377,211


6


THE ULTIMATE SOFTWARE GROUP, INC. AND SUBSIDIARIES
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)
 
For the Twelve Months Ended December 31,
 
2018
 
2017
Cash flows from operating activities:
 
 
 
Net income
$
65,140

 
$
14,055

Adjustments to reconcile net income to net cash provided by operating activities:
 
 
 
Depreciation and amortization
49,217

 
34,055

Provision for doubtful accounts
7,855

 
5,727

Non-cash stock-based compensation expense
140,353

 
146,427

Income taxes
16,131

 
28,607

Net amortization of premiums and accretion of discounts on available-for-sale securities
(666
)
 
308

Changes in operating assets and liabilities, net of business combinations:
 
 
 
Accounts receivable
(48,231
)
 
(34,476
)
Deferred contract costs, prepaid expenses and other current assets
(37,515
)
 
(9,704
)
Deferred contract costs and other assets
(27,495
)
 
(5,977
)
Accounts payable
(5,136
)
 
2,580

Accrued expenses, other liabilities and deferred rent
31,633

 
7,498

Deferred revenue
32,585

 
24,885

Net cash provided by operating activities
223,871

 
213,985

Cash flows from investing activities:
 
 
 
Purchases of property and equipment
(80,062
)
 
(77,594
)
Purchases of marketable securities
(279,926
)
 
(168,006
)
Proceeds from sales and maturities of marketable securities
204,140

 
121,857

Payments for acquisitions, net
(74,420
)
 
(1,000
)
Net change in money market securities and other cash equivalents held to satisfy customer funds obligations
20,370

 
(37,959
)
Net cash used in investing activities
(209,898
)
 
(162,702
)
Cash flows from financing activities:
 
 
 
Net proceeds from issuances of Common Stock
3,323

 
6,565

Shares acquired to settle employee tax withholding liabilities
(64,806
)
 
(68,034
)
Principal payments on capital lease obligations
(5,422
)
 
(6,340
)
Payments of other long-term liabilities
(3,750
)
 

Net change in customer funds obligations
55,200

 
97,608

Net cash (used in) provided by financing activities
(15,455
)
 
29,799

Effect of exchange rate changes on cash
(2,956
)
 
830

Net (decrease) increase in cash and cash equivalents
(4,438
)
 
81,912

Cash and cash equivalents, beginning of period
155,685

 
73,773

Cash and cash equivalents, end of period
$
151,247

 
$
155,685

 
 
 
 
Supplemental disclosure of cash flow information:
 
 
 
Cash paid for interest
$
596

 
$
498

Cash paid for taxes
$
7,581

 
$
2,192

 
 
 
 
Non-cash investing and financing activities:
 
 
 
Capital lease obligations to acquire new equipment
$
9,091

 
$
7,250

Stock consideration recorded for business combination
$
172,166

 
$

Stock based compensation for capitalized software
$
3,533

 
$
4,003

Software agreement
$

 
$
6,500

Deferred cash consideration recorded for acquisitions
$
49,335

 
$


7


THE ULTIMATE SOFTWARE GROUP, INC. AND SUBSIDIARIES
Unaudited Reconciliation of Non-GAAP Financial Measures to GAAP Financial Measures
(In thousands, except per share amounts)

 
For the Three Months Ended December 31,
 
For the Twelve Months Ended December 31,
 
2018
 
2017
 
2018
 
2017
Non-GAAP operating income, as a % of total revenues reconciliation:
 
 
 
 
 
 
 
Operating income
$
22,888

 
$
20,043

 
$
80,598

 
$
44,546

Operating income, as a % of total revenues
7.5
%
 
8.0
%
 
7.1
%
 
4.7
%
Add back:
 
 
 
 
 
 
 
Non-cash stock-based compensation expense
36,297

 
35,269

 
140,353

 
146,427

Non-cash amortization of acquired intangible assets
4,856

 
785

 
10,107

 
3,129

Transaction costs related to business combinations
90

 

 
3,059

 

Non-GAAP operating income
$
64,131

 
$
56,097

 
$
234,117

 
$
194,102

Non-GAAP operating income, as a % of total revenues
21.0
%
 
22.3
%
 
20.5
%
 
20.6
%
 
 
 
 
 
 
 
Non-GAAP net income reconciliation:
 
 
 
 
 
 
 
Net income (loss)
$
13,381

 
$
(2,057
)
 
$
65,140

 
$
14,055

Add back:
 
 
 
 
 
 
 
Non-cash stock-based compensation expense
36,297

 
35,269

 
140,353

 
146,427

Non-cash amortization of acquired intangible assets
4,856

 
785

 
10,107

 
3,129

Transaction costs related to business combinations
90

 

 
3,059

 

Income tax effect of above items
7,768

 
(8,635
)
 
(32,460
)
 
(54,263
)
Provision for income taxes, related to the Tax Act

 
8,800

 

 
8,800

Non-GAAP net income
$
62,392

 
$
34,162

 
$
186,199

 
$
118,148

 
 
 
 
 
 
 
 
Non-GAAP net income, per diluted share, reconciliation: (1)
 
 
 
 
 
 
 
Net income (loss), per diluted share
$
0.42

 
$
(0.07
)
 
$
2.06

 
$
0.46

Add back:
 
 
 
 
 
 
 
Non-cash stock-based compensation expense
1.14

 
1.15

 
4.44

 
4.75

Non-cash amortization of acquired intangible assets
0.15

 
0.03

 
0.32

 
0.10

Transaction costs related to business combinations

 

 
0.10

 

Income tax effect of above items
0.24

 
(0.28
)
 
(1.02
)
 
(1.76
)
Provision for income taxes, related to the Tax Act

 
0.28

 

 
0.29

Non-GAAP net income, per diluted share
$
1.95

 
$
1.11

 
$
5.90

 
$
3.84

Shares used in calculation of GAAP and non-GAAP net income per share:
 
 
 
 
 
 
 
Basic
31,304

 
30,021

 
30,854

 
29,791

Diluted
31,976

 
30,892

 
31,578

 
30,799

_________________________
(1)
The non-GAAP net income per diluted share reconciliation is calculated on a diluted weighted average share basis for GAAP net income periods.

8


Use of Non-GAAP Financial Information
This press release contains non-GAAP financial measures. We believe that non-GAAP measures of financial results provide useful information to management and investors regarding certain financial and business trends relating to our financial condition and results of operations. Management uses these non-GAAP results to compare our performance to that of prior periods for trend analyses, for purposes of determining executive incentive compensation, and for budget and planning purposes. These measures are used in monthly financial reports prepared for management and in quarterly financial reports presented to our Board of Directors. These measures may be different from non-GAAP financial measures used by other companies.
These non-GAAP measures should not be considered in isolation or as an alternative to such measures determined in accordance with generally accepted accounting principles in the United States (GAAP). The principal limitation of these non-GAAP financial measures is that they exclude significant expenses that are required by GAAP to be recorded. In addition, they are subject to inherent limitations as they reflect the exercise of judgment by management about which expenses are excluded from the non-GAAP financial measures.
To compensate for these limitations, we present our non-GAAP financial measures in connection with our GAAP results. We strongly urge investors and potential investors in our securities to review the reconciliation of our non-GAAP financial measures to the comparable GAAP financial measures that are included in this press release (under the caption “Unaudited Reconciliation of Non-GAAP Financial Measures to GAAP Financial Measures”) and not to rely on any single financial measure to evaluate our business.
We present the following non-GAAP financial measures in this press release: non-GAAP operating income, as a percentage of total revenues (or non-GAAP operating margin), non-GAAP net income and non-GAAP net income, per diluted share. We exclude the following items from these non-GAAP financial measures as appropriate:
Stock-based compensation expense. Our non-GAAP financial measures exclude stock-based compensation expense, which consists of expenses for stock-based arrangements recorded in accordance with Accounting Standards Codification 718, “Compensation – Stock Compensation.” For the three and twelve months ended December 31, 2018, stock-based compensation expense was $36.3 million and $140.4 million, respectively, on a pre-tax basis. For the three and twelve months ended December 31, 2017, stock-based compensation expense was $35.3 million and $146.4 million, respectively, on a pre-tax basis. Stock-based compensation expense is excluded from the non-GAAP financial measures because it is a non-cash expense that we do not consider part of ongoing operations when assessing our financial performance. We believe that such exclusion facilitates the comparison of results of ongoing operations for current and future periods with such results from past periods. For GAAP net income periods, non-GAAP reconciliations are calculated on a diluted weighted average share basis.
Amortization of acquired intangible assets. In accordance with GAAP, operating expenses include amortization of acquired intangible assets over the estimated useful lives of such assets. For the three and twelve months ended December 31, 2018, the amortization of acquired intangible assets was $4.9 million and $10.1 million, respectively. For the three and twelve months ended December 31, 2017, the amortization of acquired intangible assets was $0.8 million and $3.1 million, respectively. Amortization of acquired intangible assets is excluded from our non-GAAP financial measures because it is a non-cash expense that we do not consider part of ongoing operations when assessing our financial performance. We believe that such exclusion facilitates comparisons to our historical operating results and to the results of other companies in the same industry, which have their own unique acquisition histories.
Transaction costs related to business combinations. In accordance with GAAP, operating expenses include transaction costs for third-party professional services received in connection with business combinations. As we do not acquire or dispose of businesses on a predictable basis, the terms of each business combination are unique and can vary significantly from other business combinations. Significant expenses can be incurred in connection with a business combination that we would not have otherwise incurred in the periods presented as part of our continuing operations. For the three and twelve months ended December 31, 2018, the transaction costs incurred related to business combinations was $0.1 million and $3.1 million, respectively. There were no transaction costs incurred related to business combinations for the three and twelve months ended December 31, 2017. Transaction costs related to business combinations are excluded from Ultimate's non-GAAP financial measures because it is an expense that Ultimate does not consider part of ongoing operations when assessing our financial performance. Ultimate believes that such exclusion facilitates comparisons to our historical operating results and to the results of other companies in the same industry, which have their own unique business combination histories.


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