XML 41 R28.htm IDEA: XBRL DOCUMENT v3.22.1

STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2022

STOCK-BASED COMPENSATION

Summary of the Company's stock option activity

​

​	​	​	​	​	​	​	​	​	​	​
​		​		​	​	​	​	​		Weighted Average
​	​	​	​	​	​	​	​	​	​	Remaining
​	​	​	​	Weighted Average		​	Total Intrinsic		​	Contractual
​		Number of Shares		Exercise Price			Value			Life (in years)
Outstanding as of January 1, 2022		7,686,233	​	$	5.47	​	$	—	​	7.7
Granted		1,820,000	​	​	0.51	​	​	—	​	9.8
Canceled/Expired		(117,082)	​	​	2.60	​	​	—	​	—
Outstanding as of March 31, 2022		9,389,151	​	$	4.54	​	$	—	​	7.9
Options vested and exercisable		4,798,325	​	$	6.48	​	$	—	​	7.1

Schedule or Description of Weighted Average Discount Rate

​

​	​	​	​	​
​	​	​	​	​
​	​	For the Three Months Ended		​
​		March 31, 2022
Exercise price	​	$	0.51	​
Expected term (years)	​		6.0	​
Expected stock price volatility	​		84	%
Risk-free rate of interest	​		2	%
Expected dividend rate	​		0	%

Schedule of stock-based compensation expenses

​

​	​	​	​	​	​	​
​		For the Three Months Ended
​	​	March 31,
​		2022			2021
Stock Compensation expenses:		​			​
Research and development	​	$	878,000	​	$	696,000
General and administrative	​		753,000	​		681,000
Total stock compensation expenses	​	$	1,631,000	​	$	1,377,000

X

- Definition

Tabular disclosure of stock based compensation expenses recorded.

+ References

No definition available.

+ Details

Name:	mrkr_StockBasedCompensationExpensesTableTextBlock
Namespace Prefix:	mrkr_
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 activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, 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 (e)
-URI http://asc.fasb.org/extlink&oid=120381028&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 (c)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&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 (d)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationActivityTableTextBlock
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 http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

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