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Stock Plans
6 Months Ended
Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock Plans
Stock Plans
The Company has two active stock-based compensation plans as of June 30, 2017: the 2004 Employee Stock Purchase Plan and the 2013 Omnibus Equity Incentive Plan under which incentive stock options, non-qualified stock options, restricted stock awards and restricted stock units can be granted to employees and non-employee directors.
The Company generally issues the majority of employee stock compensation grants in the first quarter of the year; other grants issued during the year are typically for new employees or non-employee directors.
Stock Options
During the three and six months ended June 30, 2017, the Company granted 45,000 stock options which had an average grant date fair value per share of $2.95. During the three and six months ended June 30, 2016, no stock options were granted. Compensation expense recognized for stock options for the three months ended June 30, 2017 and 2016 was $57,000 and $4,000, respectively. Compensation expense recognized for stock options for the six months ended June 30, 2017 and 2016 was $107,000 and $85,000, respectively. The fair value of the stock options granted during the three and six months ended June 30, 2017 was estimated using the Black-Scholes valuation model with the following assumptions:
 
 
Three and Six Months Ended June 30, 2017
Expected dividend yield
 
%
Expected volatility
 
59
%
Risk-free interest rate
 
1.87
%
Expected term (in years)
 
5.5


Restricted Stock Awards
Beginning in 2014, the Company ceased granting restricted stock awards (“RSAs”) and began granting restricted stock units (“RSUs”) to employees as part of its annual equity incentive award program, therefore, no restricted stock awards were issued during the three and six months ended June 30, 2017 and 2016. During the three months ended June 30, 2017 and 2016, compensation expense recognized for RSAs was $0.1 million and $0.3 million, respectively. During the six months ended June 30, 2017 and 2016, compensation expense recognized for RSAs was $0.2 million and $9,000, respectively. During the first quarter of 2016, there were significant reversals of previously recorded expense due to terminations under the Company’s 2015 restructuring plan as well as other employee terminations.
Restricted Stock Units
Non-employee directors receive annual RSU awards as part of their annual retainer compensation. These awards vest approximately one year from the date of grant provided the non-employee director provides continued service. Additionally, new directors normally receive RSUs upon their election to the board. The Company also grants RSUs to employees as part of its annual equity incentive award program, with vesting typically in equal annual installments over four years of continuous service. Additionally, the Company grants performance-based restricted stock units (“PSUs”) to executives with vesting contingent on continued service and achievement of specified performance objectives or stock price performance. Each restricted stock unit represents the right to receive one unrestricted share of the Company’s common stock upon vesting.
During the three months ended June 30, 2017, the Company granted 443,704 RSUs of which 254,942 were service-based RSUs with an average grant date fair value of $5.73 per share and 188,762 were PSUs with an average grant date fair value of $6.08 per share. During the six months ended June 30, 2017, the Company granted 1,413,417 RSUs of which 921,655 were service-based RSUs with an average grant date fair value of $5.52 per share and 491,762 were PSUs with an average grant date fair value of $6.77 per share.
During the three months ended June 30, 2016, the Company granted 152,417 RSUs of which 122,085 were service-based RSUs with an average grant date value of $5.10 per share and 30,332 were PSUs with an average grant date fair value of $7.08 per share. During the six months ended June 30, 2016, the Company granted 1,187,631 RSUs of which 854,912 were service-based RSUs with an average grant date value of $5.59 per share and 332,719 were PSUs with an average grant date fair value of $7.50 per share.
For the three months ended June 30, 2017 and 2016, PSUs granted included 30,762 and 30,332 market-condition restricted stock units, respectively. For the six months ended June 30, 2017 and 2016, PSUs granted included 333,762 and 286,495 market-condition restricted stock units, respectively. The market-condition PSUs will vest based on the level of the Company’s stock price performance against a determined market index over one, two and three year performance periods. The market-condition PSUs have the potential to vest between 0% and 200% depending on the Company’s stock price performance and the recipients must remain employed through the end of each performance period in order to vest. The fair value of the market-condition PSUs granted was calculated using a Monte Carlo valuation model with the following assumptions:
 
 
Three and Six Months Ended June 30,
 
 
2017
 
2016
Expected dividend yield
 
%
 
%
Expected volatility
 
53
%
 
62
%
Risk-free interest rate
 
1.55
%
 
1.07
%
Expected term (in years)
 
2.8

 
3.0


The following table summarizes the amount of compensation expense recognized for RSUs for the three and six months ended June 30, 2017 and 2016 (in thousands):
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
RSU Type
 
2017
 
2016
 
2017
 
2016
Service-based
 
$
669

 
$
536

 
$
1,337

 
$
1,069

Performance objectives
 
164

 
29

 
170

 
41

Market-condition
 
403

 
180

 
595

 
371

 
 
$
1,236

 
$
745

 
$
2,102

 
$
1,481


Employee Stock Purchase Plan
The 2004 Employee Stock Purchase Plan (“ESPP”) permits substantially all employees to purchase common stock through payroll deductions, at 85% of the lower of the trading price of the stock at the beginning or at the end of each six month offering period. The number of shares purchased is based on participants’ contributions made during the offering period.
Compensation expense recognized for the ESPP for the three months ended June 30, 2017 and 2016 was $20,000 and $54,000, respectively, and was $53,000 and $135,000, respectively, for the six months ended June 30, 2017 and 2016. The fair value of the ESPP shares for the three and six months ended June 30, 2017 and 2016 was estimated using the Black-Scholes valuation model for a call and a put option with the following weighted-average assumptions:
 
 
Three and Six Months Ended June 30,
 
 
2017
 
2016
Expected dividend yield
 
%
 
%
Expected volatility
 
29
%
 
60
%
Risk-free interest rate
 
0.62
%
 
0.49
%
Expected term (in years)
 
0.5

 
0.5

Fair value per share
 
$
1.19

 
$
2.27


Bonuses Settled in Stock
On January 15, 2016, the Compensation Committee of the Board of Directors of the Company adopted the Maxwell Technologies, Inc. Incentive Bonus Plan to enable participants to earn annual incentive bonuses based upon achievement of specified financial and strategic performance objectives. The Company may settle bonuses earned under the plan in either cash or stock, and currently intends to settle the majority of bonuses earned under the plan in stock. During the first quarter of 2017, the Company settled $1.2 million of bonuses earned under the plan for the 2016 performance period with 142,582 shares of fully vested common stock and 89,730 fully vested restricted stock units, which were subsequently settled during the second quarter of 2017. An additional $0.3 million of bonuses earned for the 2016 performance period are recorded in “accrued employee compensation” in the Company’s condensed consolidated balance sheet as of June 30, 2017.
The Company recorded $0.8 million and $0.3 million of stock compensation expense related to the bonus plan during the three months ended June 30, 2017 and 2016, respectively. The Company recorded $1.3 million and $0.9 million of stock compensation expense related to the bonus plan during the six months ended June 30, 2017 and 2016, respectively.
Director Fees Settled in Stock
In 2017, the Board approved a deferred compensation program under which non-employee directors may make irrevocable elections to receive all or a portion of their cash-based non-employee director fees (including, as applicable, any annual retainer fee, committee fee and any other compensation payable with respect to their service as a member of the Board) in stock and to elect to defer receipt of those shares. In the event that a director makes such an election, the Company will grant fully vested restricted stock units in lieu of cash, with an initial value equal to the cash fees, which will be settled either in the year granted or at a future date elected by the respective non-employee director through the issuance of Maxwell common stock. In addition, non-employee directors may elect to defer settlement of the initial and annual RSU awards granted to them in connection with their service as a non-employee director. The Company recorded $0.1 million of stock compensation expense related to director fees to be settled in stock during the three and six months ended June 30, 2017.
Stock-Based Compensation Expense
Stock-based compensation cost included in cost of revenue; selling, general and administrative expense; and research and development expense is as follows (in thousands):
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
 
2017
 
2016
 
2017
 
2016
Cost of revenue
 
$
257

 
$
262

 
$
450

 
$
497

Selling, general and administrative
 
1,596

 
966

 
2,665

 
1,637

Research and development
 
401

 
231

 
677

 
528

Total stock-based compensation expense
 
$
2,254

 
$
1,459

 
$
3,792

 
$
2,662