HORN HOWARD

PrivateCIK: 1786335
Location

NOVATO, CA

HORN HOWARD (Chief Financial Officer) sold 10.6% of their position (10.04K shares) of ULTRAGENYX PHARMACEUTICAL INC. on the open market

Open‑market sale worth $227.5K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 3 sales
InsiderHORN HOWARDCIK 1786335
Officer· Chief Financial Officer
Since Mar 2026
-3.90K
Net shares
Net seller
$227.5K
Total sold
3
Open market trades
0B · 3S
4
Total transactions
6.14K acquired · 10.04K disposed
Non-Derivative Transactions4

Common Stock

Direct
A · Award

Shares

+6.14K

Price / share

Trade value

% of position

6.9%
3/1/2026
88.94K95.08K

Common Stock

Direct
S · Sale

Shares

5.29K

Price / share

$22.80

Trade value

$120.61K

% of position

5.6%
3/2/2026
95.08K89.79K

Common Stock

Direct
S · Sale

Shares

3.12K

Price / share

$22.54

Trade value

$70.30K

% of position

3.5%
3/2/2026
89.79K86.67K

Common Stock

Direct
S · Sale

Shares

1.64K

Price / share

$22.40

Trade value

$36.62K

% of position

1.9%
3/3/2026
86.67K85.03K
Total

Net shares

3.90K

Net value

-$227.54K

Derivative Transactions0
No derivative transactions reported
HORN HOWARD — Insider Transaction (Form 4) Filed Mar 3, 2026 | Finecho