XML 34 R23.htm IDEA: XBRL DOCUMENT v3.23.1

Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2023

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Option Transations

The following table summarizes the stock option transactions for the 2006 Plan:

		Total Options					Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (years)					Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2022			739,511			$		6.94				7.36			$		8,903
Assumed in the Merger			310,431					76.72				—					—
Granted			180,231					17.34				—					—
Outstanding at March 31, 2023			1,230,173			$		26.14				5.82			$		371
Vested and exercisable at March 31, 2023			941,638			$		30.53				5.82			$		371

Schedule of Assumptions Using Black-Scholes to Estimate Fair Value of the stock option grants

The following is the range of underlying assumptions in Black-Scholes to determine the fair value of the stock option grants for the three months ended March 31, 2023 and 2022:

		Three Months Ended March 31,
		2023				2022
Risk free interest rate		3.56%				1.62%-1.76%
Expected volatility		75%				88%
Expected term (years)			6.25			5.50-6.08
Expected dividend yield		0%				0%

Summary of Stock-Based Compensation Expense Recognized for Options and RSUs Granted

Stock-based compensation expense recognized for options and restricted stock units granted was as follows (in thousands):

		Three Months Ended March 31,
		2023				2022
Research and development		$	2,080			$	224
General and administrative			9,046				111
Total stock-based compensation expense		$	11,126			$	335

The stock-based compensation expense includes one-time charges for the acceleration of vesting of the Graybug stock options at the date of the Merger of $1.9 million and $8.6 million in research and development and general and administrative expenses, respectively.

Schedule of Common Stock Reserved for Future issuance

Common stock reserved for future issuance consists of the following at March 31, 2023:

		March 31,
		2023
Common stock warrants			276,437
Stock options issued and outstanding			1,230,173
Shares available for issuance under the 2023 Plan			1,000,000
Shares available under the 2023 ESPP			65,000
Total			2,571,610

X

- Definition

Tabular disclosure of schedule of common stock reserved for future issuance.

+ References

No definition available.

+ Details

Name:	calc_ScheduleOfCommonStockReservedForFutureIssuanceTableTextBlock
Namespace Prefix:	calc_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration