CHO ESTHER enters KEROS THERAPEUTICS, INC. with 44K shares plus derivative instruments

Holding both equity and derivatives at entry signals strong long-term conviction in the company.

Direct Derivatives

CHO ESTHER

Filed: 8/15/2025ACC: 0001415889-25-022075

InsiderCHO ESTHERCIK 2081460

→

IssuerKEROS THERAPEUTICS, INC.CIK 1664710

Officer· Chief Legal Officer

Since Jan 2026

44K

Baseline shares

100% direct

44K

Direct ownership

1 position

165.97K

Derivative underlying

5 instruments

Security positions

All direct

Non-Derivative Holdings1

Common Stock

Direct

Shares owned44K

Total

44K direct44K

Security Title	Shares Owned	Ownership Type
Common Stock	44K	Direct
Total	44K	44K direct

Derivative Holdings5

Employee Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

25K

Shares owned

N/A

Exercise price

46.30

Expiration

—

Exercise window

—

Employee Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

50K

Shares owned

N/A

Exercise price

54.38

Expiration

—

Exercise window

—

Employee Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

50K

Shares owned

N/A

Exercise price

56.18

Expiration

—

Exercise window

—

Employee Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

20.97K

Shares owned

N/A

Exercise price

29.02

Expiration

—

Exercise window

—

Employee Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

20K

Shares owned

N/A

Exercise price

70.93

Expiration

—

Exercise window

—

Total

Underlying

165.97K

Owned

0.00

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Employee Stock Option (Right to Buy) Direct	Common Stock	46.30	—	—	25K	N/A
Employee Stock Option (Right to Buy) Direct	Common Stock	54.38	—	—	50K	N/A
Employee Stock Option (Right to Buy) Direct	Common Stock	56.18	—	—	50K	N/A
Employee Stock Option (Right to Buy) Direct	Common Stock	29.02	—	—	20.97K	N/A
Employee Stock Option (Right to Buy) Direct	Common Stock	70.93	—	—	20K	N/A
Total					165.97K	0.00