Item 5. Market for Registrant’s Common Equity
Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities.
Our common stock trades on the Nasdaq Global Select Market under the symbol ACLS. As of February 20, 2024, we had approximately 712 stockholders of record.
The following table summarizes the stock repurchase activity for the 12 months ended December 31, 2023 pursuant to our stock repurchase program:
Total Number of Shares Purchased
Average Price Paid per Share
Total Number of Shares Purchased as Part of Publicly Announced Program
Approximate Dollar Value of Shares that May Yet Be Purchased Under the Program
(in thousands except per share amounts)
January 1 through January 31
32
$102.49
32
$
39,174
February 1 through February 28
48
$120.31
48
33,459
March 1 through March 31
27
$129.74
27
30,006
April 1 through April 30
27
$126.06
27
26,665
May 1 through May 31
56
$126.51
56
19,581
June 1 through June 30
12
$161.88
12
17,506
July 1 through July 31
22
$179.93
22
13,507
August 1 through August 31
27
$175.80
27
208,761
(1)
September 1 through September 30
22
$174.80
22
205,007
October 1 through October 31
44
$154.98
44
198,188
November 1 through November 30
63
$130.28
63
190,006
December 1 through December 31
—
N/A
—
Total
380
380
(1) The increase in the dollar value available for repurchases under the program at August 31, 2023 reflects the additional funding authorized under the program in August 2023.
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We currently maintain one equity compensation plan, the 2012 Equity Incentive Plan (the “2012 Equity Plan”). The number of shares issuable upon exercise of outstanding options and unvested restricted stock units granted to employees and non-employee directors, as well as the number of shares remaining available for future issuance, under the 2012 Equity Plan and our 2020 Employee Stock Purchase Plan as of December 31, 2023 are summarized in the following table:
(A)
(B)
(C)
Plan category
Number of shares to be issued upon exercise of outstanding options, warrants and rights (1)
Weighted ‑ average exercise price of outstanding options, warrants and rights (2)
Number of shares remaining available for future issuance under equity compensation plans (excluding shares reflected in column (A)) (3)
Equity compensation plans approved by stockholders
541,898
$ 0.34
1,659,502
Equity compensation plans not approved by stockholders
—
NA
NA
Total
541,898
1,659,502
Weighted average exercise price of outstanding options at December 31, 2023
$61.81
Weighted average remaining term of outstanding options at December 31, 2023
4.9 years
(1) Represents, as of December 31, 2023: (A) 3,000 shares issuable on exercise of outstanding options under the 2012 Equity Plan, plus (B) 538,098 shares issuable on vesting of outstanding RSUs under the 2012 Equity Plan (some of which will be withheld in respect of tax withholding obligations).
(2) For the purposes of this table, the weighted-average exercise price of outstanding options, warrants and rights includes RSUs as if they had a $0.00 exercise price. The weighted-average exercise price of outstanding options at December 31, 2023 was $61.81.
(3) Represents the total shares available for issuance under our 2012 Equity Plan and our 2020 Employee Stock Purchase Plan, as of December 31, 2023, as follows:
(A)
750,550 shares were available for future issuance under the 2012 Equity Plan. Such amount represents the total number of shares reserved for issuance under the 2012 Equity Plan ((7,762,500 shares approved by the shareholders, plus 1,777,029 shares added in accordance with the terms of the 2012 Equity Plan as a result of the expiration or forfeiture of awards granted under our prior equity grant plan that were outstanding at the time of the adoption of the 2012 Equity Plan), less the shares issuable on options and restricted stock units (counted at 1.5 shares each) outstanding under the 2012 Equity Plan included in column (A)) and the shares issued prior to such date on exercise of options and vesting of restricted stock units granted under the 2012 Equity Plan. This plan is generally used for grants to employees and directors and was initially approved by our stockholders at our 2012 annual meeting.
(B)
908,952 shares were available under our 2020 Employee Stock Purchase Plan, which represents the total number of shares reserved for issuance under the plan (1,000,000) less the shares purchased through December 31, 2023.
Item 6. [RESERVED]
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