FSS

insider transactions

FEDERAL SIGNAL CORP /DE/ — buys & sells by directors, officers and 10% owners (SEC Form 4).

30D 90D 1Y

No open-market buys or sells this period. The trades below are grants, option exercises and gifts, which carry no market price.

Net buy / sell volume

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

Transactions · 90d

Open-market Buys Sells All types

Other·F
May 4, 26

SHERMAN JENNIFER L KEY

President & CEO

$4.5M

37.4K sh · $120.76 avg · 2 lots

Own -6%
Other·F
May 4, 26

Hudson Ian A. KEY

S.V.P. & CFO

$194.7K

1.7K sh · $117.49

Own -2%
Other·F
May 4, 26

WEBER MARK

SVP & COO

$267.6K

2.3K sh · $117.49

Own -3%
Other·F
May 4, 26

Bonina Diane

VP, Gen'l Counsel & Secretary

$113.0K

962 sh · $117.49

Own -5%
Exercise·M
May 1, 26

SHERMAN JENNIFER L KEY

President & CEO

$0

59.2K sh

Own New
Exercise·M
May 1, 26

SHERMAN JENNIFER L KEY

President & CEO

$750.0K

59.2K sh · $12.66

Own +10%
Grant·A
Apr 21, 26

Workman John L

Director

$0

1.3K sh

Own +2%
Grant·A
Apr 21, 26

Vaillancourt Eric A.

Director

$0

1.3K sh

Own +3040%
Grant·A
Apr 21, 26

Patel Shashank

Director

$0

1.3K sh

Own +12%
Grant·A
Apr 21, 26

Maue Richard A

Director

$0

1.3K sh

Own +63%
Grant·A
Apr 21, 26

Lowe Eugene Joseph III

Director

$0

1.3K sh

Own +6%
Grant·A
Apr 21, 26

Helmkamp Katrina L

Director

$0

1.3K sh

Own +30%
Grant·A
Apr 21, 26

REICHELDERFER BRENDA

Director

$0

1.7K sh

Own +3%
Grant·A
Mar 27, 26

Maue Richard A

Director

$0

43 sh

Own +2%
Grant·A
Mar 27, 26

Vaillancourt Eric A.

Director

$0

42 sh

Own New

Date▾	Insider	Role	Type	Shares	Own Δ	Price	Value
May 4, 2026	SHERMAN JENNIFER L KEY	President & CEO	Other F	37.4K2 lots	-6%	$120.76 avg	$4.5M
May 4, 2026	Hudson Ian A. KEY	S.V.P. & CFO	Other F	1.7K	-2%	$117.49	$194.7K
May 4, 2026	WEBER MARK	SVP & COO	Other F	2.3K	-3%	$117.49	$267.6K
May 4, 2026	Bonina Diane	VP, Gen'l Counsel & Secretary	Other F	962	-5%	$117.49	$113.0K
May 1, 2026	SHERMAN JENNIFER L KEY	President & CEO	Exercise M	59.2K	New	—	$0
May 1, 2026	SHERMAN JENNIFER L KEY	President & CEO	Exercise M	59.2K	+10%	$12.66	$750.0K
Apr 21, 2026	Workman John L	Director	Grant A	1.3K	+2%	—	$0
Apr 21, 2026	Vaillancourt Eric A.	Director	Grant A	1.3K	+3040%	—	$0
Apr 21, 2026	Patel Shashank	Director	Grant A	1.3K	+12%	—	$0
Apr 21, 2026	Maue Richard A	Director	Grant A	1.3K	+63%	—	$0
Apr 21, 2026	Lowe Eugene Joseph III	Director	Grant A	1.3K	+6%	—	$0
Apr 21, 2026	Helmkamp Katrina L	Director	Grant A	1.3K	+30%	—	$0
Apr 21, 2026	REICHELDERFER BRENDA	Director	Grant A	1.7K	+3%	—	$0
Mar 27, 2026	Maue Richard A	Director	Grant A	43	+2%	—	$0
Mar 27, 2026	Vaillancourt Eric A.	Director	Grant A	42	New	—	$0

Buy Sell Non-market (grant · exercise · gift)

About FSS insider trading

This page tracks insider transactions for FEDERAL SIGNAL CORP /DE/ (FSS) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.