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FAIR VALUE MEASUREMENTS - (Tables)

3 Months Ended

Mar. 31, 2021

Fair Value Disclosures [Abstract]

Summary of Fair Value Measurements of Cash Equivalents, Available-for-Sale Marketable Securities and Free Share Asset/Liability

The fair value measurements of the Company’s cash equivalents, marketable securities and the free shares asset are identified at the following levels within the fair value hierarchy (in thousands):

			March 31, 2021
			Fair Value Measurements
			Total						Level 1						Level 2						Level 3
Assets:
Cash equivalents:
Money market funds			$	47,635					$	47,635					$	—					$	—
Total			47,635						47,635						—						—
Marketable securities:
Commercial paper securities			177,154						—						177,154						—
Corporate debt securities			39,022						—						39,022						—
Certificates of deposit			11,494						—						11,494						—
Asset-backed securities			36,410						—						36,410						—
U.S. government-sponsored entity debt securities			242,460						—						242,460						—
Total			506,540						—						506,540						—
Total cash equivalents and marketable securities			$	554,175					$	47,635					$	506,540					$	—
Free shares asset			$	38					$	—					$	—					$	38

			December 31, 2020
			Fair Value Measurements
			Total						Level 1						Level 2						Level 3
Assets:
Cash equivalents:
Money market funds			$	53,165					$	53,165					$	—					$	—
Total			53,165						53,165						—						—
Marketable securities:
Commercial paper securities			213,533						—						213,533						—
Corporate debt securities			59,574						—						59,574						—
Certificate of deposits			12,311						—						12,311						—
Asset-backed securities			17,908						—						17,908						—
U.S. government-sponsored entity debt securities			257,298						—						257,298						—
Total			560,624						—						560,624						—
Total cash equivalents and marketable securities			$	613,789					$	53,165					$	560,624					$	—
Free shares asset			$	70					$	—					$	—					$	70

Summary of Estimated Fair Value of Free Shares Valuation Assumptions

Free Shares valuation assumptions						March 31, 2021						December 31, 2020
Sangamo stock price (USD)						$	11.83					$	15.61
Sangamo France stock price (EUR)						€	2.92					€	3.85
EUR / USD exchange rate						0.84						0.82
Estimated correlation between Sangamo and Sangamo France stock prices						100.0		%				100.0		%
Sangamo stock price (USD) volatility estimate						91.3		%				88.9		%
Sangamo France stock price (EUR) volatility estimate						91.3		%				88.9		%
EUR / USD exchange rate volatility estimate						6.3		%				6.3		%
Risk free rate and cost of debt by expected exercise date						Varies						Varies

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- Definition

Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19279-110258

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2C
-URI http://asc.fasb.org/extlink&oid=117815213&loc=SL7498348-110258

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bb)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- Definition

Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- References

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