NIEMANN JENNIFER C reported 6 transactions at STEELCASE INC

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

NIEMANN JENNIFER C

Filed: 8/8/2025ACC: 0001711504-25-000005

InsiderNIEMANN JENNIFER CCIK 1711504

→

IssuerSTEELCASE INCCIK 1050825

Director

Since Jul 2018

0.00

Net shares

Net seller

$0.00

Total acquired

Open market trades

0B · 0S

Total transactions

2.13M acquired · 2.13M disposed

Non-Derivative Transactions6

Class A Common Stock

Direct

C · Conversion

+436.86K

Price / share

—

Trade value

—

% of position

684.7%

8/8/2025

63.80K→500.67K

Class A Common Stock

Indirect

C · Conversion

+5.70K

Price / share

—

Trade value

—

% of position

5703.0%

8/8/2025

100.00→5.80K

Class A Common Stock

Indirect

C · Conversion

+104.38K

Price / share

—

Trade value

—

% of position

New position

8/8/2025

0.00→104.38K

Class A Common Stock

Indirect

C · Conversion

+72.43K

Price / share

—

Trade value

—

% of position

1518.4%

8/8/2025

4.77K→77.20K

Class A Common Stock

Indirect

C · Conversion

+51.96K

Price / share

—

Trade value

—

% of position

New position

8/8/2025

0.00→51.96K

Class A Common Stock

Indirect

C · Conversion

+1.46M

Price / share

—

Trade value

—

% of position

New position

8/8/2025

0.00→1.46M

Total

Net shares

+2.13M

Net value

$0.00

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	8/8/2025	C · Conversion	+436.86K	—	—	684.7%	63.80K	500.67K
Class A Common Stock Indirect	8/8/2025	C · Conversion	+5.70K	—	—	5703.0%	100.00	5.80K
Class A Common Stock Indirect	8/8/2025	C · Conversion	+104.38K	—	—	New position	0.00	104.38K
Class A Common Stock Indirect	8/8/2025	C · Conversion	+72.43K	—	—	1518.4%	4.77K	77.20K
Class A Common Stock Indirect	8/8/2025	C · Conversion	+51.96K	—	—	New position	0.00	51.96K
Class A Common Stock Indirect	8/8/2025	C · Conversion	+1.46M	—	—	New position	0.00	1.46M
Total			+2.13M		$0.00

Derivative Transactions6

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

436.86K shares

−436.86K

Strike price

Held after

0.00

Exercisable

—

8/8/2025

Class B Common Stock

Indirect

C · Conversion

Converts to

Class A Common Stock

5.70K shares

−5.70K

Strike price

Held after

0.00

Exercisable

—

8/8/2025

Class B Common Stock

Indirect

C · Conversion

Converts to

Class A Common Stock

104.38K shares

−104.38K

Strike price

Held after

0.00

Exercisable

—

8/8/2025

Class B Common Stock

Indirect

C · Conversion

Converts to

Class A Common Stock

72.43K shares

−72.43K

Strike price

Held after

0.00

Exercisable

—

8/8/2025

Class B Common Stock

Indirect

C · Conversion

Converts to

Class A Common Stock

51.96K shares

−51.96K

Strike price

Held after

0.00

Exercisable

—

8/8/2025

Class B Common Stock

Indirect

C · Conversion

Converts to

Class A Common Stock

1.46M shares

−1.46M

Strike price

Held after

0.00

Exercisable

—

8/8/2025

Security	Converts To	Date	Type	Shares	Exercisable
Class B Common Stock Direct	Class A Common Stock436.86K shares	8/8/2025	C · Conversion	−436.86K	—
Class B Common Stock Indirect	Class A Common Stock5.70K shares	8/8/2025	C · Conversion	−5.70K	—
Class B Common Stock Indirect	Class A Common Stock104.38K shares	8/8/2025	C · Conversion	−104.38K	—
Class B Common Stock Indirect	Class A Common Stock72.43K shares	8/8/2025	C · Conversion	−72.43K	—
Class B Common Stock Indirect	Class A Common Stock51.96K shares	8/8/2025	C · Conversion	−51.96K	—
Class B Common Stock Indirect	Class A Common Stock1.46M shares	8/8/2025	C · Conversion	−1.46M	—

Non-Derivative Holdings (Post-Transaction)1

Class A Common Stock

Indirect

Shares owned10K

Total

10K indirect10K

Security Title	Shares Owned	Ownership Type
Class A Common Stock	10K	Indirect
Total	10K	10K indirect

Derivative Holdings (Post-Transaction)0

No derivative holdings reported