TSSI

insider transactions

TSS, Inc. — buys & sells by directors, officers and 10% owners (SEC Form 4).

30D 90D 1Y

Net shares · 365d

-286.6K

250.0K buy · 536.6K sell

Net value · 365d

-$8.4M

$27.5K in · $8.4M out

Sentiment · 365d

Net selling

0% buying · 100% selling

Open-market trades · 365d

250.0K buy · 536.6K sell

Net buy / sell volume

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

All transactions

Sell·S
Jun 2, 26

Peter H Woodward

Director

$1.5M

100.0K sh · $15.48

Own -8%
Sell·S
Jun 1, 26

Kieran Brennan KEY

Senior Vice President

$160.0K

10.0K sh · $16.00

Own -4%
Sell·S
May 29, 26

Peter H Woodward

Director

$3.2M

200.0K sh · $16.07

Own -17%
Buy·P
May 8, 26

Larry C Heaton II KEY

CEO

$27.5K

250.0K sh · $0.11

Own +25%
Sell·S
May 6, 26

Darryll E Dewan KEY

Chief Executive Officer · 10b5-1

$850.0K

50.0K sh · $17.00

Own -10%
Sell·S
Apr 22, 26

Darryll E Dewan KEY

Chief Executive Officer · 10b5-1

$800.0K

50.0K sh · $16.00

Own -9%
Sell·S
Apr 17, 26

Karl Todd Marrott

Chief Operating Officer · 10b5-1

$357.2K

23.6K sh · $15.11

Own -9%
Sell·S
Apr 16, 26

Karl Todd Marrott

Chief Operating Officer · 10b5-1

$12.0K

800 sh · $15.00

Own -0%
Sell·S
Apr 14, 26

Darryll E Dewan KEY

Chief Executive Officer · 10b5-1

$750.0K

50.0K sh · $15.00

Own -8%
Sell·S
Apr 14, 26

Daniel M Chism KEY

Chief Financial Officer · 10b5-1

$375.0K

25.0K sh · $15.00

Own -7%
Sell·S
Apr 14, 26

Karl Todd Marrott

Chief Operating Officer · 10b5-1

$228.6K

15.2K sh · $15.03

Own -5%
Other·F
Mar 23, 26

Karl Todd Marrott

Chief Operating Officer

$7.6K

609 sh · $12.40

Own -0%
Grant·A
Mar 23, 26

Karl Todd Marrott

Chief Operating Officer

$0

5.0K sh

Own +2%
Grant·A
Mar 23, 26

Darryll E Dewan KEY

Chief Executive Officer

$0

5.0K sh

Own +1%
Other·F
Mar 23, 26

Daniel M Chism KEY

Chief Financial Officer

$7.6K

609 sh · $12.40

Own -0%
Grant·A
Mar 23, 26

Daniel M Chism KEY

Chief Financial Officer

$0

5.0K sh

Own +1%
Other·F
Mar 23, 26

Kieran Brennan KEY

Senior Vice President

$3.8K

304 sh · $12.40

Own -0%
Grant·A
Mar 23, 26

Kieran Brennan KEY

Senior Vice President

$0

2.5K sh

Own +1%
Sell·S
Mar 16, 26

Kieran Brennan KEY

Senior Vice President

$147.2K

12.0K sh · $12.27

Own -4%
Other·F
Feb 24, 26

Karl Todd Marrott

Chief Operating Officer

$68.6K

8.1K sh · $8.45

Own -3%
Other·F
Feb 24, 26

Kieran Brennan KEY

Senior Vice President

$76.2K

9.0K sh · $8.45

Own -3%
Other·F
Jan 29, 26

Darryll E Dewan KEY

Chief Executive Officer

$290.8K

26.0K sh · $11.20

Own -4%
Other·F
Jan 16, 26

Karl Todd Marrott

Chief Operating Officer

$146.7K

12.2K sh · $12.05

Own -4%
Other·F
Jan 16, 26

Darryll E Dewan KEY

Chief Executive Officer

$324.2K

26.9K sh · $12.05

Own -4%
Other·F
Jan 16, 26

Daniel M Chism KEY

Chief Financial Officer

$146.7K

12.2K sh · $12.05

Own -3%
Grant·A
Jan 14, 26

Peter H Woodward

Director

$0

3.8K sh

Own +24%
Grant·A
Jan 14, 26

Richard M. Metzler

Director

$0

3.8K sh

Own +3%
Grant·A
Jan 14, 26

Vivek Mohindra

Director

$0

3.8K sh

Own New
Grant·A
Jan 14, 26

Karl Todd Marrott

Chief Operating Officer

$0

29.8K sh

Own +11%
Grant·A
Jan 14, 26

Michael John Fahy

Director

$0

3.8K sh

Own +76%
Grant·A
Jan 14, 26

Darryll E Dewan KEY

Chief Executive Officer

$0

37.8K sh

Own +6%
Grant·A
Jan 14, 26

Daniel M Chism KEY

Chief Financial Officer

$0

33.1K sh

Own +10%
Grant·A
Jan 14, 26

Kieran Brennan KEY

Senior Vice President

$0

12.2K sh

Own +4%
Exercise·M
Jan 8, 26

Daniel M Chism KEY

Chief Financial Officer

$0

41.7K sh

Own +100%
Exercise·M
Jan 8, 26

Daniel M Chism KEY

Chief Financial Officer

$71.7K

41.7K sh · $1.72

Own +14%
Other·F
Jan 1, 26

Karl Todd Marrott

Chief Operating Officer

$95.7K

13.5K sh · $7.07

Own -5%
Other·F
Jan 1, 26

Darryll E Dewan KEY

Chief Executive Officer

$95.7K

13.5K sh · $7.07

Own -2%
Other·F
Jun 27, 25

Karl Todd Marrott

Chief Operating Officer

$1.5M

48.7K sh · $30.25

Own -10%

Date▾	Insider	Role	Type	Shares	Own Δ	Price	Value
Jun 2, 2026	Peter H Woodward	Director	Sell S	100.0K	-8%	$15.48	$1.5M
Jun 1, 2026	Kieran Brennan KEY	Senior Vice President	Sell S	10.0K	-4%	$16.00	$160.0K
May 29, 2026	Peter H Woodward	Director	Sell S	200.0K	-17%	$16.07	$3.2M
May 8, 2026	Larry C Heaton II KEY	CEO	Buy P	250.0K	+25%	$0.11	$27.5K
May 6, 2026	Darryll E Dewan KEY 10b5-1	Chief Executive Officer	Sell S	50.0K	-10%	$17.00	$850.0K
Apr 22, 2026	Darryll E Dewan KEY 10b5-1	Chief Executive Officer	Sell S	50.0K	-9%	$16.00	$800.0K
Apr 17, 2026	Karl Todd Marrott 10b5-1	Chief Operating Officer	Sell S	23.6K	-9%	$15.11	$357.2K
Apr 16, 2026	Karl Todd Marrott 10b5-1	Chief Operating Officer	Sell S	800	-0%	$15.00	$12.0K
Apr 14, 2026	Darryll E Dewan KEY 10b5-1	Chief Executive Officer	Sell S	50.0K	-8%	$15.00	$750.0K
Apr 14, 2026	Daniel M Chism KEY 10b5-1	Chief Financial Officer	Sell S	25.0K	-7%	$15.00	$375.0K
Apr 14, 2026	Karl Todd Marrott 10b5-1	Chief Operating Officer	Sell S	15.2K	-5%	$15.03	$228.6K
Mar 23, 2026	Karl Todd Marrott	Chief Operating Officer	Other F	609	-0%	$12.40	$7.6K
Mar 23, 2026	Karl Todd Marrott	Chief Operating Officer	Grant A	5.0K	+2%	—	$0
Mar 23, 2026	Darryll E Dewan KEY	Chief Executive Officer	Grant A	5.0K	+1%	—	$0
Mar 23, 2026	Daniel M Chism KEY	Chief Financial Officer	Other F	609	-0%	$12.40	$7.6K
Mar 23, 2026	Daniel M Chism KEY	Chief Financial Officer	Grant A	5.0K	+1%	—	$0
Mar 23, 2026	Kieran Brennan KEY	Senior Vice President	Other F	304	-0%	$12.40	$3.8K
Mar 23, 2026	Kieran Brennan KEY	Senior Vice President	Grant A	2.5K	+1%	—	$0
Mar 16, 2026	Kieran Brennan KEY	Senior Vice President	Sell S	12.0K	-4%	$12.27	$147.2K
Feb 24, 2026	Karl Todd Marrott	Chief Operating Officer	Other F	8.1K	-3%	$8.45	$68.6K
Feb 24, 2026	Kieran Brennan KEY	Senior Vice President	Other F	9.0K	-3%	$8.45	$76.2K
Jan 29, 2026	Darryll E Dewan KEY	Chief Executive Officer	Other F	26.0K	-4%	$11.20	$290.8K
Jan 16, 2026	Karl Todd Marrott	Chief Operating Officer	Other F	12.2K	-4%	$12.05	$146.7K
Jan 16, 2026	Darryll E Dewan KEY	Chief Executive Officer	Other F	26.9K	-4%	$12.05	$324.2K
Jan 16, 2026	Daniel M Chism KEY	Chief Financial Officer	Other F	12.2K	-3%	$12.05	$146.7K
Jan 14, 2026	Peter H Woodward	Director	Grant A	3.8K	+24%	—	$0
Jan 14, 2026	Richard M. Metzler	Director	Grant A	3.8K	+3%	—	$0
Jan 14, 2026	Vivek Mohindra	Director	Grant A	3.8K	New	—	$0
Jan 14, 2026	Karl Todd Marrott	Chief Operating Officer	Grant A	29.8K	+11%	—	$0
Jan 14, 2026	Michael John Fahy	Director	Grant A	3.8K	+76%	—	$0
Jan 14, 2026	Darryll E Dewan KEY	Chief Executive Officer	Grant A	37.8K	+6%	—	$0
Jan 14, 2026	Daniel M Chism KEY	Chief Financial Officer	Grant A	33.1K	+10%	—	$0
Jan 14, 2026	Kieran Brennan KEY	Senior Vice President	Grant A	12.2K	+4%	—	$0
Jan 8, 2026	Daniel M Chism KEY	Chief Financial Officer	Exercise M	41.7K	+100%	—	$0
Jan 8, 2026	Daniel M Chism KEY	Chief Financial Officer	Exercise M	41.7K	+14%	$1.72	$71.7K
Jan 1, 2026	Karl Todd Marrott	Chief Operating Officer	Other F	13.5K	-5%	$7.07	$95.7K
Jan 1, 2026	Darryll E Dewan KEY	Chief Executive Officer	Other F	13.5K	-2%	$7.07	$95.7K
Jun 27, 2025	Karl Todd Marrott	Chief Operating Officer	Other F	48.7K	-10%	$30.25	$1.5M

About TSSI insider trading

This page tracks insider transactions for TSS, Inc. (TSSI) 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.