TURNER WILLIAM V

PrivateCIK: 1044043

Location

SPRINGFIELD, MO

TURNER WILLIAM V sold 2.9% of their position (6K shares) of GREAT SOUTHERN BANCORP, INC. on the open market

Open‑market sale worth $410.1K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

TURNER WILLIAM V

Filed: 5/19/2026ACC: 0001214659-26-006562

InsiderTURNER WILLIAM VCIK 1044043

→

IssuerGREAT SOUTHERN BANCORP, INC.CIK 854560

Director

Since Oct 2018

-6K

Net shares

Net seller

$410.1K

Total sold

1

Open market trades

0B · 1S

3

Total transactions

6K acquired · 12K disposed

Non-Derivative Transactions2

Common stock

Direct

M · Option Exercise

Shares

+6K

Price / share

$52.20

Trade value

$313.20K

% of position

3.0%

5/18/2026

199.11K→205.11K

Common stock

Direct

S · Sale

Shares

−6K

Price / share

$68.35

Trade value

$410.10K

% of position

2.9%

5/18/2026

205.11K→199.11K

Total

Net shares

+0.00

Net value

-$96.90K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common stock Direct	5/18/2026	M · Option Exercise	+6K	$52.20	$313.20K	3.0%	199.11K	205.11K
Common stock Direct	5/18/2026	S · Sale	−6K	$68.35	$410.10K	2.9%	205.11K	199.11K
Total			+0.00		-$96.90K

Derivative Transactions1

Option to purchase

Direct

M · Option Exercise

Converts to

Common Stock

6K shares

Shares

−6K

Strike price

52.2

Held after

0.00

Exercisable

—

5/18/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Option to purchase Direct	Common Stock6K shares	5/18/2026	M · Option Exercise	−6K	52.2	—	0.00

Non-Derivative Holdings (Post-Transaction)1

Common stock

Indirect

Shares owned8.98K

Total

8.98K indirect8.98K

Security Title	Shares Owned	Ownership Type
Common stock	8.98K	Indirect
Total	8.98K	8.98K indirect

Derivative Holdings (Post-Transaction)8

Option to purchase

Direct

Underlying security

Common stock

Underlying shares

7.80K

Shares owned

58.65K

Exercise price

61.79

Expiration

—

Exercise window

—

Option to purchase

Direct

Underlying security

Common stock

Underlying shares

7K

Shares owned

20K

Exercise price

60.15

Expiration

—

Exercise window

—

Option to purchase

Direct

Underlying security

Common stock

Underlying shares

7.50K

Shares owned

27.50K

Exercise price

41.74

Expiration

—

Exercise window

—

Option to purchase

Direct

Underlying security

Common Stock

Underlying shares

7K

Shares owned

13K

Exercise price

55

Expiration

—

Exercise window

—

Option to purchase

Direct

Underlying security

Common stock

Underlying shares

7.75K

Shares owned

35.25K

Exercise price

57.98

Expiration

—

Exercise window

—

Option to purchase

Direct

Underlying security

Common stock

Underlying shares

7.80K

Shares owned

43.05K

Exercise price

61.55

Expiration

—

Exercise window

—

Option to purchase

Direct

Underlying security

Common stock

Underlying shares

7.80K

Shares owned

50.85K

Exercise price

53.22

Expiration

—

Exercise window

—

Option to purchase

Direct

Underlying security

Common stock

Underlying shares

7.80K

Shares owned

66.45K

Exercise price

57.29

Expiration

—

Exercise window

—

Total

Underlying

60.45K

Owned

314.75K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Option to purchase Direct	Common stock	61.79	—	—	7.80K	58.65K
Option to purchase Direct	Common stock	60.15	—	—	7K	20K
Option to purchase Direct	Common stock	41.74	—	—	7.50K	27.50K
Option to purchase Direct	Common Stock	55	—	—	7K	13K
Option to purchase Direct	Common stock	57.98	—	—	7.75K	35.25K
Option to purchase Direct	Common stock	61.55	—	—	7.80K	43.05K
Option to purchase Direct	Common stock	53.22	—	—	7.80K	50.85K
Option to purchase Direct	Common stock	57.29	—	—	7.80K	66.45K
Total					60.45K	314.75K

TURNER WILLIAM V — Insider Transaction (Form 4) Filed May 19, 2026 | Finecho