SHUM HEUNG YEUNG sold 25.9% of their position (21.20K shares) of YOUDAO, INC. on the open market

Insider sale on the open market — a significant reduction. Check remaining position size for full context.

S · 4 sales

SHUM HEUNG YEUNG

Filed: 9/2/2026ACC: 0001193125-26-379297

InsiderSHUM HEUNG YEUNGCIK 1591807

→

IssuerYOUDAO, INC.CIK 1781753

Director

Since Mar 2026

-21.20K

Net shares

Net seller

$0.00

Total acquired

Open market trades

0B · 4S

Total transactions

21.20K acquired · 42.40K disposed

Non-Derivative Transactions8

Class A Ordinary Shares

Direct

M · Option Exercise

+4K

Price / share

—

Trade value

—

% of position

6.6%

8/31/2026

60.77K→64.77K

Class A Ordinary Shares

Direct

S · Sale

−4K

Price / share

—

Trade value

—

% of position

6.2%

8/31/2026

64.77K→60.77K

Class A Ordinary Shares

Direct

M · Option Exercise

+4K

Price / share

—

Trade value

—

% of position

6.6%

8/31/2026

60.77K→64.77K

Class A Ordinary Shares

Direct

S · Sale

−4K

Price / share

—

Trade value

—

% of position

6.2%

8/31/2026

64.77K→60.77K

Class A Ordinary Shares

Direct

M · Option Exercise

+9.19K

Price / share

—

Trade value

—

% of position

15.1%

8/31/2026

60.77K→69.96K

Class A Ordinary Shares

Direct

S · Sale

−9.19K

Price / share

—

Trade value

—

% of position

13.1%

8/31/2026

69.96K→60.77K

Class A Ordinary Shares

Direct

M · Option Exercise

+4.01K

Price / share

—

Trade value

—

% of position

6.6%

9/1/2026

60.77K→64.78K

Class A Ordinary Shares

Direct

S · Sale

−4.01K

Price / share

—

Trade value

—

% of position

6.2%

9/1/2026

64.78K→60.77K

Total

Net shares

+0.00

Net value

$0.00

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Ordinary Shares Direct	8/31/2026	M · Option Exercise	+4K	—	—	6.6%	60.77K	64.77K
Class A Ordinary Shares Direct	8/31/2026	S · Sale	−4K	—	—	6.2%	64.77K	60.77K
Class A Ordinary Shares Direct	8/31/2026	M · Option Exercise	+4K	—	—	6.6%	60.77K	64.77K
Class A Ordinary Shares Direct	8/31/2026	S · Sale	−4K	—	—	6.2%	64.77K	60.77K
Class A Ordinary Shares Direct	8/31/2026	M · Option Exercise	+9.19K	—	—	15.1%	60.77K	69.96K
Class A Ordinary Shares Direct	8/31/2026	S · Sale	−9.19K	—	—	13.1%	69.96K	60.77K
Class A Ordinary Shares Direct	9/1/2026	M · Option Exercise	+4.01K	—	—	6.6%	60.77K	64.78K
Class A Ordinary Shares Direct	9/1/2026	S · Sale	−4.01K	—	—	6.2%	64.78K	60.77K
Total			+0.00		$0.00

Derivative Transactions4

Option

Direct

M · Option Exercise

Converts to

Class A Ordinary Shares

4K shares

−4K

Strike price

Held after

17.20K

Exercisable

—

8/31/2026

Option

Direct

M · Option Exercise

Converts to

Class A Ordinary Shares

4K shares

−4K

Strike price

Held after

13.20K

Exercisable

—

8/31/2026

Option

Direct

M · Option Exercise

Converts to

Class A Ordinary Shares

9.19K shares

−9.19K

Strike price

Held after

4.01K

Exercisable

—

8/31/2026

Option

Direct

M · Option Exercise

Converts to

Class A Ordinary Shares

4.01K shares

−4.01K

Strike price

Held after

0.00

Exercisable

—

9/1/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Option Direct	Class A Ordinary Shares4K shares	8/31/2026	M · Option Exercise	−4K	—	17.20K
Option Direct	Class A Ordinary Shares4K shares	8/31/2026	M · Option Exercise	−4K	—	13.20K
Option Direct	Class A Ordinary Shares9.19K shares	8/31/2026	M · Option Exercise	−9.19K	—	4.01K
Option Direct	Class A Ordinary Shares4.01K shares	9/1/2026	M · Option Exercise	−4.01K	—	0.00