Thomas Richard Kassberg - 01 Mar 2023 Form 4 Insider Report for Ultragenyx Pharmaceutical Inc. (RARE)

Role: CBO & EVP
Signature: /s/ Karah Parschauer, attorney-in-fact
Issuer symbol: RARE
Transactions as of: 01 Mar 2023
Net transactions value: -$244,027
Form type: 4
Filing time: 03 Mar 2023, 18:57:33 UTC
Previous filing: 15 Mar 2022
Next filing: 24 Oct 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	RARE	Common Stock	Award	$0	+2,663	+1.2%	$0.000000	230,222	01 Mar 2023	Direct	F1
transaction	RARE	Common Stock	Award	$0	+22,000	+9.6%	$0.000000	252,222	01 Mar 2023	Direct	F2
transaction	RARE	Common Stock	Sale	$89,091	-1,968	-0.78%	$45.27	250,254	01 Mar 2023	Direct	F3
transaction	RARE	Common Stock	Disposed to Issuer	$154,936	-3,394	-1.4%	$45.65	246,860	01 Mar 2023	Direct	F4, F5

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	RARE	Stock Option (Right to Buy)	Award	$0	+39,400		$0.000000	39,400	01 Mar 2023	Common Stock	39,400	$45.65	Direct	F6

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents shares of common stock which previously granted performance stock units were converted on March 1, 2023 upon certification of the performance metric.
F2	Award of Restricted Stock Units ("RSUs") under the Company's 2014 Incentive Plan. The RSUs shall vest with respect to 1/4th of the underlying shares on each anniversary of the grant date, such that the RSUs are fully vested on the fourth anniversary of the grant date.
F3	Represents shares sold to pay required tax withholdings due to the vesting of RSUs.
F4	Shares were acquired upon the partial vesting of a previously reported RSU and were sold to permit the cash value of the awards to be credited to the deferred compensation plan account of the Reporting Person
F5	Includes previously reported shares of common stock underlying RSUs granted to the Reporting Person, which are subject to certain vesting conditions.
F6	On the first anniversary of the grant date of the option (the "Option Anniversary Date"), 1/4th of the shares initially subject to the option shall vest; thereafter, 1/48th of the shares initially subject to the option shall vest on each month as measured from the Option Anniversary Date.