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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1515673	Ultragenyx Pharmaceutical Inc.	RARE	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1303811	Richard Thomas Kassberg	C/O Ultragenyx Pharmaceutical Inc. 60 Leveroni Court Novato CA 94949	Cbo & Evp	No	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2024-03-01	17,800	$0.00	264,660	No	4	A	Direct
Common Stock	Acquisiton	2024-03-01	957	$0.00	265,617	No	4	A	Direct
Common Stock	Disposition	2024-03-01	274	$53.69	265,343	No	4	F	Direct
Common Stock	Disposition	2024-03-01	1,011	$53.76	264,332	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	A	Direct
No	4	A	Direct
No	4	F	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Option (Right to Buy)	Acquisiton	2024-03-01	31,400	$0.00	31,400	$53.69

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
31,400		2034-03-01	No	4	A	Direct

Footnotes

Award of Restricted Stock Units ("RSUs") under the Company's 2023 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
Represents shares of common stock which previously granted performance stock units were converted on March 1, 2024 upon certification of the performance metric.
Represents shares surrendered to the Issuer by the Reporting Person to pay required tax withholdings due to the vesting of RSUs.
Represents shares sold to pay required tax withholdings due to the vesting of RSUs.
Includes previously reported shares of common stock underlying RSUs granted to the Reporting Person, which are subject to certain vesting conditions.
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.