HERR AMY E. exercised options at BIO-TECHNE CORP

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 1 exercise

HERR AMY E.

Filed: 8/18/2026ACC: 0000914190-26-000113

InsiderHERR AMY E.CIK 2055523

→

IssuerBIO-TECHNE CORPCIK 842023

Director

Since Feb 2026

-213.00

Net shares

Net seller

$15.4K

Total sold

Open market trades

0B · 0S

Total transactions

589.00 acquired · 802.00 disposed

Non-Derivative Transactions2

Common Stock

Indirect

M · Option Exercise

+589.00

Price / share

—

Trade value

—

% of position

294.5%

8/15/2026

200.00→789.00

Common Stock

Indirect

F · Tax Withholding

−213.00

Price / share

$72.40

Trade value

$15.42K

% of position

27.0%

8/15/2026

789.00→576.00

Total

Net shares

+376.00

Net value

-$15.42K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Indirect	8/15/2026	M · Option Exercise	+589.00	—	—	294.5%	200.00	789.00
Common Stock Indirect	8/15/2026	F · Tax Withholding	−213.00	$72.40	$15.42K	27.0%	789.00	576.00
Total			+376.00		-$15.42K

Derivative Transactions3

Restricted Stock Units

Indirect

M · Option Exercise

Converts to

Common Stock

118.00 shares

−118.00

Strike price

Held after

0.00

Exercisable

—

8/15/2026

Restricted Stock Units

Indirect

M · Option Exercise

Converts to

Common Stock

160.00 shares

−160.00

Strike price

Held after

160.00

Exercisable

—

8/15/2026

Restricted Stock Units

Indirect

M · Option Exercise

Converts to

Common Stock

311.00 shares

−311.00

Strike price

Held after

621.00

Exercisable

—

8/15/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Restricted Stock Units Indirect	Common Stock118.00 shares	8/15/2026	M · Option Exercise	−118.00	—	0.00
Restricted Stock Units Indirect	Common Stock160.00 shares	8/15/2026	M · Option Exercise	−160.00	—	160.00
Restricted Stock Units Indirect	Common Stock311.00 shares	8/15/2026	M · Option Exercise	−311.00	—	621.00

Non-Derivative Holdings (Post-Transaction)1

Common Stock

Direct

Shares owned2.68K

Total

2.68K direct2.68K

Security Title	Shares Owned	Ownership Type
Common Stock	2.68K	Direct
Total	2.68K	2.68K direct

Derivative Holdings (Post-Transaction)10

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

2.42K

Shares owned

2.42K

Exercise price

72.05

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Indirect

Underlying security

Common Stock

Underlying shares

4.47K

Shares owned

4.47K

Exercise price

66.97

Expiration

—

Exercise window

—

Restricted Stock Units

Indirect

Underlying security

Common Stock

Underlying shares

77.00

Shares owned

77.00

Exercise price

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

3.78K

Shares owned

3.78K

Exercise price

60.96

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Indirect

Underlying security

Common Stock

Underlying shares

2.08K

Shares owned

2.08K

Exercise price

120.46

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Indirect

Underlying security

Common Stock

Underlying shares

2.10K

Shares owned

2.10K

Exercise price

94.52

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Indirect

Underlying security

Common Stock

Underlying shares

344.00

Shares owned

344.00

Exercise price

72.05

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Indirect

Underlying security

Common Stock

Underlying shares

1.08K

Shares owned

1.08K

Exercise price

84.61

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Indirect

Underlying security

Common Stock

Underlying shares

1.47K

Shares owned

1.47K

Exercise price

74.91

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Indirect

Underlying security

Common Stock

Underlying shares

2.73K

Shares owned

2.73K

Exercise price

53.60

Expiration

—

Exercise window

—

Total

Underlying

20.55K

Owned

20.55K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Stock Option (Right to Buy) Direct	Common Stock	72.05	—	—	2.42K	2.42K
Stock Option (Right to Buy) Indirect	Common Stock	66.97	—	—	4.47K	4.47K
Restricted Stock Units Indirect	Common Stock		—	—	77.00	77.00
Stock Option (Right to Buy) Direct	Common Stock	60.96	—	—	3.78K	3.78K
Stock Option (Right to Buy) Indirect	Common Stock	120.46	—	—	2.08K	2.08K
Stock Option (Right to Buy) Indirect	Common Stock	94.52	—	—	2.10K	2.10K
Stock Option (Right to Buy) Indirect	Common Stock	72.05	—	—	344.00	344.00
Stock Option (Right to Buy) Indirect	Common Stock	84.61	—	—	1.08K	1.08K
Stock Option (Right to Buy) Indirect	Common Stock	74.91	—	—	1.47K	1.47K
Stock Option (Right to Buy) Indirect	Common Stock	53.60	—	—	2.73K	2.73K
Total					20.55K	20.55K