Donal L Mulligan

TNC

Donal L Mulligan serves as director at Tennant Company (TNC). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

6 trades

$1.92M

Total Sells

4 trades

$751.0K

Net Position

Net Buyer

$1.17M

Companies Traded

TNC, ENR, HLF

Active Period

Nov 2021 – Mar 2026

10 total trades

Most Recent

Buy TNC

Mar 2, 2026 · $504.1K

Donal L Mulligan's Insider Trading at Tennant Company (TNC)

Buys

1 · $504.1K

Sells

4 · $751.0K

Total Shares Bought

8,000

Total Shares Sold

8,974

TNC Price Chart

Loading chart...

Date	Type	Shares	Avg Price	Value	Shares After
Mar 2, 2026	Buy	8,000	$63.02	$504.1K	8,000
Feb 29, 2024	Sell	2,358	$110.00	$259.4K	16,715
Oct 5, 2023	Sell	1,765	$73.94	$130.5K	16,715
Apr 5, 2023	Sell	2,320	$68.38	$158.6K	15,268
Nov 3, 2021	Sell	2,531	$80.00	$202.5K	13,532

Donal L Mulligan's Insider Trading at Herbalife Nutrition Ltd. (HLF)

Buys

3 · $919.6K

Sells

0 · $0.00

Total Shares Bought

60,000

Total Shares Sold

HLF Price Chart

Loading chart...

Date	Type	Shares	Avg Price	Value	Shares After
May 6, 2024	Buy	30,000	$9.65	$289.5K	60,000
Feb 24, 2023	Buy	15,000	$19.32	$289.8K	30,000
May 12, 2022	Buy	15,000	$22.69	$340.4K	23,560

Donal L Mulligan's Insider Trading at Energizer Holdings, Inc. (ENR)

Buys

2 · $497.6K

Sells

0 · $0.00

Total Shares Bought

25,000

Total Shares Sold

ENR Price Chart

Loading chart...

Date	Type	Shares	Avg Price	Value	Shares After
Dec 2, 2025	Buy	15,000	$17.40	$261.0K	0
May 19, 2025	Buy	10,000	$23.66	$236.6K	0

Related Insiders

Aqua Capital, Ltd.

10 percent owner

ENRBuy · Apr 17, 2026

Azita Arvani

director

TNCSell · Mar 2, 2026

EICHER CAROL S

director

TNCSell · Mar 2, 2026

David W. Huml

director, officer: PRESIDENT AND CEO

TNCBuy · Mar 2, 2026

David Windley

director

TNCSell · Mar 2, 2026

James T Glerum Jr.

director

TNCBuy · Mar 2, 2026

John DeSimone

Chief Financial Officer

HLFSell · Feb 16, 2026

Stephan Paulo Gratziani

Chief Executive Officer

HLFSell · Feb 16, 2026

Explore More Insider Trading Data

TNC Insider Trading Activity

View all insider trades at Tennant Company

Industrials Sector Insider Trades

See insider activity across industrials stocks

Latest Insider Buys

Most recent insider purchases across all stocks

CEO Stock Purchases

Track CEO buying activity