PLATZER ERICH

PrivateCIK: 1275087

Location

SAN DIEGO, CA

PLATZER ERICH reported 1 transaction at APTOSE BIOSCIENCES INC.

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

PLATZER ERICH

Filed: 7/1/2026ACC: 0000912282-26-000896

InsiderPLATZER ERICHCIK 1275087

→

IssuerAPTOSE BIOSCIENCES INC.CIK 882361

Director

Since Dec 2018

-504.45K

Net shares

Net seller

$1.9K

Total sold

0

Open market trades

0B · 0S

11

Total transactions

504.45K disposed

Non-Derivative Transactions1

Common Shares

Direct

D · Disposition

Shares

−1.12K

Price / share

$1.72

Trade value

$1.93K

% of position

New position

6/30/2026

1.12K→0.00

Total

Net shares

−1.12K

Net value

-$1.93K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Shares Direct	6/30/2026	D · Disposition	−1.12K	$1.72	$1.93K	New position	1.12K	0.00
Total			−1.12K		-$1.93K

Derivative Transactions10

Director Stock Option (Right to Buy)

Direct

D · Disposition

Converts to

Common Shares

3.33K shares

Shares

−3.33K

Strike price

2

Held after

0.00

Exercisable

—

6/30/2026

Director Stock Option (Right to Buy)

Direct

D · Disposition

Converts to

Common Shares

100K shares

Shares

−100K

Strike price

0.66

Held after

0.00

Exercisable

—

6/30/2026

Director Stock Option (Right to Buy)

Direct

D · Disposition

Converts to

Common Shares

50K shares

Shares

−50K

Strike price

1.34

Held after

0.00

Exercisable

—

6/30/2026

Director Stock Option (Right to Buy)

Direct

D · Disposition

Converts to

Common Shares

50K shares

Shares

−50K

Strike price

4.37

Held after

0.00

Exercisable

—

6/30/2026

Director Option Grant

Direct

D · Disposition

Converts to

Common Shares

50K shares

Shares

−50K

Strike price

7.08

Held after

0.00

Exercisable

—

6/30/2026

Director Option Grant

Direct

D · Disposition

Converts to

Common Shares

135K shares

Shares

−135K

Strike price

6.91

Held after

0.00

Exercisable

—

6/30/2026

Stock Options (Right to Buy)

Direct

D · Disposition

Converts to

Common Shares

40K shares

Shares

−40K

Strike price

1.91

Held after

0.00

Exercisable

—

6/30/2026

Director Stock Option

Direct

D · Disposition

Converts to

Common Shares

10K shares

Shares

−10K

Strike price

1.14

Held after

0.00

Exercisable

—

6/30/2026

Director Stock Option (Right to Buy)

Direct

D · Disposition

Converts to

Common Shares

5K shares

Shares

−5K

Strike price

1.03

Held after

0.00

Exercisable

—

6/30/2026

Director Stock Option (Right to Buy)

Direct

D · Disposition

Converts to

Common Shares

60K shares

Shares

−60K

Strike price

2.80

Held after

0.00

Exercisable

—

6/30/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Director Stock Option (Right to Buy) Direct	Common Shares3.33K shares	6/30/2026	D · Disposition	−3.33K	2	—	0.00
Director Stock Option (Right to Buy) Direct	Common Shares100K shares	6/30/2026	D · Disposition	−100K	0.66	—	0.00
Director Stock Option (Right to Buy) Direct	Common Shares50K shares	6/30/2026	D · Disposition	−50K	1.34	—	0.00
Director Stock Option (Right to Buy) Direct	Common Shares50K shares	6/30/2026	D · Disposition	−50K	4.37	—	0.00
Director Option Grant Direct	Common Shares50K shares	6/30/2026	D · Disposition	−50K	7.08	—	0.00
Director Option Grant Direct	Common Shares135K shares	6/30/2026	D · Disposition	−135K	6.91	—	0.00
Stock Options (Right to Buy) Direct	Common Shares40K shares	6/30/2026	D · Disposition	−40K	1.91	—	0.00
Director Stock Option Direct	Common Shares10K shares	6/30/2026	D · Disposition	−10K	1.14	—	0.00
Director Stock Option (Right to Buy) Direct	Common Shares5K shares	6/30/2026	D · Disposition	−5K	1.03	—	0.00
Director Stock Option (Right to Buy) Direct	Common Shares60K shares	6/30/2026	D · Disposition	−60K	2.80	—	0.00