HAYDEN MICHAEL R

PrivateCIK: 1352908
Location

VICTORIA, A1

HAYDEN MICHAEL R reported 3 transactions at 89BIO, INC.

Review the transaction codes below to understand the nature of each event.

InsiderHAYDEN MICHAEL RCIK 1352908
Issuer89BIO, INC.CIK 1785173
Director
Since Nov 2019
-480.18K
Net shares
Net seller
$0.00
Total acquired
0
Open market trades
0B · 0S
13
Total transactions
480.18K disposed
Non-Derivative Transactions3

Common Stock

Direct
U · U

Shares

80.90K

Price / share

Trade value

% of position

New position
10/30/2025
80.90K0.00

Common Stock

Indirect
U · U

Shares

103.98K

Price / share

Trade value

% of position

New position
10/30/2025
103.98K0.00

Common Stock

Indirect
U · U

Shares

61.54K

Price / share

Trade value

% of position

New position
10/30/2025
61.54K0.00
Total

Net shares

246.42K

Net value

$0.00

Derivative Transactions10

Stock Option (Right to Buy)

Direct
D · Disposition
Converts to

Common Stock

27.65K shares

Shares

27.65K

Strike price

1.93

Held after

0.00

Exercisable

10/30/2025

Stock Option (Right to Buy)

Direct
D · Disposition
Converts to

Common Stock

2.93K shares

Shares

2.93K

Strike price

1.93

Held after

0.00

Exercisable

10/30/2025

Stock Option (Right to Buy)

Direct
D · Disposition
Converts to

Common Stock

22.73K shares

Shares

22.73K

Strike price

3.11

Held after

0.00

Exercisable

10/30/2025

Stock Option (Right to Buy)

Direct
D · Disposition
Converts to

Common Stock

7K shares

Shares

7K

Strike price

21.4

Held after

0.00

Exercisable

10/30/2025

Stock Option (Right to Buy)

Direct
D · Disposition
Converts to

Common Stock

7K shares

Shares

7K

Strike price

24.29

Held after

0.00

Exercisable

10/30/2025

Stock Option (Right to Buy)

Direct
D · Disposition
Converts to

Common Stock

12.50K shares

Shares

12.50K

Strike price

24.16

Held after

0.00

Exercisable

10/30/2025

Stock Option (Right to Buy)

Direct
D · Disposition
Converts to

Common Stock

25K shares

Shares

25K

Strike price

2.64

Held after

0.00

Exercisable

10/30/2025

Stock Option (Right to Buy)

Direct
D · Disposition
Converts to

Common Stock

27.40K shares

Shares

27.40K

Strike price

14.7

Held after

0.00

Exercisable

10/30/2025

Stock Option (Right to Buy)

Direct
D · Disposition
Converts to

Common Stock

45.15K shares

Shares

45.15K

Strike price

9.98

Held after

0.00

Exercisable

10/30/2025

Stock Option (Right to Buy)

Direct
D · Disposition
Converts to

Common Stock

56.40K shares

Shares

56.40K

Strike price

9.6

Held after

0.00

Exercisable

10/30/2025
HAYDEN MICHAEL R — Insider Transaction (Form 4) Filed Oct 30, 2025 | Finecho