Exhibit 99.1

LONGVIEW ACQUISITION CORP.

PRO FORMA BALANCE SHEET

	Actual as of May 26, 2020			Pro Forma Adjustments				As Adjusted as of May 26, 2020
				(unaudited)				(unaudited)
ASSETS
Current Assets
Cash	$	3,044,596		$	(1,080,000	)	(d)	$	1,964,596
Prepaid expenses and other current assets		26,800			—				26,800
Total Current Assets		3,071,396			(1,080,000	)			1,991,396
Cash held in Trust Account		360,000,000			40,000,000		(a)		400,000,000
					(800,000	)	(b)
					800,000		(d)
Total Assets	$	363,071,396		$	38,920,000			$	401,991,396
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current Liabilities
Accrued expenses	$	1,000		$	—			$	1,000
Accrued offering costs		497,248			—				497,248
Due to Sponsor		1,080,000			(1,080,000	)	(d)		—
Promissory note – related party		191,000			—				191,000
Total Current Liabilities		1,769,248			(1,080,000	)			689,248
Deferred underwriting fee payable		12,600,000			1,400,000		(c)		14,000,000
Total Liabilities		14,369,248			320,000				14,689,248
Commitments
Class A common stock, $0.0001 par value, subject to possible redemption, 34,370,214 and 38,230,214 shares as of May 26, 2020 and as adjusted as of May 26, 2020, respectively, at $10.00 per share		343,702,140			38,600,000		(e)		382,302,140
Stockholders’ Equity:
Preferred stock, $0.0001 par value; 1,000,000 shares authorized; no shares issued and outstanding		—			—				—
Class A Common stock, $0.0001 par value; 200,000,000 shares authorized; 1,629,786 and 1,769,786 shares as of May 26, 2020 and as adjusted as of May 26, 2020, respectively, issued and outstanding (excluding 34,370,214 and 38,230,214 shares, respectively, subject to possible redemption)		163			400		(a)		177
					(386	)	(e)
Class B common stock, $0.0001 par value; 20,000,000 shares authorized; 10,350,000 shares issued and outstanding		1,035			—				1,035
Additional paid-in capital		4,999,810			39,999,600		(a)		4,999,796
					(800,000	)	(b)
					(1,400,000	)	(c)
					800,000		(d)
					(38,599,614	)	(e)
Accumulated deficit		(1,000	)		—				(1,000	)
Total Stockholders’ Equity		5,000,008			(14	)			5,000,008
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	363,071,396		$	38,920,000			$	401,991,396

See accompanying note to the pro forma balance sheet.

LONGVIEW ACQUISITION CORP.

NOTE TO PRO FORMA BALANCE SHEET

(unaudited)

NOTE 1 - CLOSING OF OVER-ALLOTMENT OPTION

The accompanying unaudited Pro Forma Balance Sheet presents the Balance Sheet of Longview Acquisition Corp. (the “Company”) as of May 26, 2020, adjusted for the partial closing of the underwriters’ over-allotment option and related transactions, which occurred on June 9, 2020, as described below.

On June 9, 2020, the Company consummated the closing of the sale of 4,000,000 additional units (the “Units”) at a price of $10.00 per unit upon receiving notice of the underwriters’ election to partially exercise their over-allotment option, generating additional gross proceeds of $40,000,000 to the Company. Each Unit consists of one share of the Company’s Class A common stock (the “Common Stock”) and one-third of one redeemable warrant (“Public Warrant”). Each whole Public Warrant entitles the holder to purchase one share of Common Stock at a price of $11.50 per share. Simultaneously with the exercise of the over-allotment option, the Company consummated the private placement of an additional 533,333 warrants (the “Private Placement Warrants”), at a purchase price of $1.50 per Private Placement Warrant, to Longview Investors LLC, generating gross proceeds of $800,000. Transaction costs amounted to $2,200,000, consisting of $800,000 in cash underwriting fees and $1,400,000 of additional underwriting fees, which have been deferred until the completion of the Company’s Business Combination. As a result of the underwriters’ election to partially exercise their over-allotment option, 1,000,000 Founder Shares are no longer subject to forfeiture. Pro forma adjustments to reflect the exercise of the underwriters’ over-allotment option are as follows:

	Pro forma entries:	Debit		Credit
a.	Cash held in Trust Account		40,000,000
	Class A common stock				400
	Additional paid-in capital				39,999,600
	To record sale of 4,000,000 Units on over-allotment option at $10.00 per Unit.
b.	Additional paid-in capital		800,000
	Cash held in Trust Account				800,000
	To record payment of 2.0% of cash underwriting fee on over-allotment option.
c.	Additional paid-in capital		1,400,000
	Deferred underwriting fee payable				1,400,000
	To record the liability for the 3.5% deferred underwriting fees on over-allotment option.
d.	Cash held in Trust Account		800,000
	Due to Sponsor		1,080,000
	Cash				1,080,000
	Additional paid in capital				800,000
	To record sale of 533,333 over-allotment Private Placement Warrants at $1.50 per warrant and repayment of funds due to Sponsor.
e.	Class A common stock		386
	Additional paid-in capital		38,599,614
	Common Stock Subject to Redemption				38,600,000
	To reclassify Class A common stock out of permanent equity into mezzanine redeemable shares.