Harrison Robert Gardner

Insider

Chief Information Officer

Trades at: SERA

30D 90D 1Y

Net shares · 365d

-37.8K

0 buy · 37.8K sell

Net value · 365d

-$98.8K

$0 in · $98.8K out

Sentiment · 365d

Net selling

0% buying · 100% selling

Open-market trades · 365d

0 buy · 37.8K sell

Trading track record · all companies

Running net of open-market buys − sells across every company. Tap the line or a marker for details. ▲ buy · ▼ sell.

Transactions · 365d

Open-market Buys Sells All types

SERA Sell·S
Mar 11, 26

Chief Information Officer

$1.5K

716 sh · $2.04

Own -1%
SERA Sell·S
Mar 9, 26

Chief Information Officer

$6.6K

3.4K sh · $1.96

Own -4%
SERA Sell·S
Feb 24, 26

Chief Information Officer · 10b5-1

$4.7K

2.0K sh · $2.34

Own -2%
SERA Sell·S
Jan 27, 26

Chief Information Officer · 10b5-1

$5.9K

2.0K sh · $2.97

Own -2%
SERA Sell·S
Dec 30, 25

Chief Information Officer · 10b5-1

$6.0K

2.0K sh · $3.00

Own -2%
SERA Sell·S
Dec 10, 25

Chief Information Officer

$2.0K

616 sh · $3.31

Own -1%
SERA Sell·S
Dec 2, 25

Chief Information Officer · 10b5-1

$5.9K

2.0K sh · $2.93

Own -2%
SERA Sell·S
Nov 10, 25

Chief Information Officer

$17.1K

6.5K sh · $2.62

Own -7%
SERA Sell·S
Nov 4, 25

Chief Information Officer · 10b5-1

$6.1K

2.0K sh · $3.07

Own -2%
SERA Sell·S
Oct 7, 25

Chief Information Officer · 10b5-1

$6.4K

2.0K sh · $3.18

Own -2%
SERA Sell·S
Sep 11, 25

Chief Information Officer

$2.0K

645 sh · $3.13

Own -1%
SERA Sell·S
Sep 9, 25

Chief Information Officer · 10b5-1

$6.1K

2.0K sh · $3.05

Own -2%
SERA Sell·S
Aug 20, 25

Chief Information Officer · 10b5-1

$13.3K

6.0K sh · $2.22

Own -6%
SERA Sell·S
Aug 8, 25

Chief Information Officer

$15.1K

6.0K sh · $2.54

Own -5%

Date▾	Ticker	Role	Type	Shares	Own Δ	Price	Value
Mar 11, 2026	SERA	Chief Information Officer	Sell S	716	-1%	$2.04	$1.5K
Mar 9, 2026	SERA	Chief Information Officer	Sell S	3.4K	-4%	$1.96	$6.6K
Feb 24, 2026	SERA	Chief Information Officer	Sell S	2.0K	-2%	$2.34	$4.7K
Jan 27, 2026	SERA	Chief Information Officer	Sell S	2.0K	-2%	$2.97	$5.9K
Dec 30, 2025	SERA	Chief Information Officer	Sell S	2.0K	-2%	$3.00	$6.0K
Dec 10, 2025	SERA	Chief Information Officer	Sell S	616	-1%	$3.31	$2.0K
Dec 2, 2025	SERA	Chief Information Officer	Sell S	2.0K	-2%	$2.93	$5.9K
Nov 10, 2025	SERA	Chief Information Officer	Sell S	6.5K	-7%	$2.62	$17.1K
Nov 4, 2025	SERA	Chief Information Officer	Sell S	2.0K	-2%	$3.07	$6.1K
Oct 7, 2025	SERA	Chief Information Officer	Sell S	2.0K	-2%	$3.18	$6.4K
Sep 11, 2025	SERA	Chief Information Officer	Sell S	645	-1%	$3.13	$2.0K
Sep 9, 2025	SERA	Chief Information Officer	Sell S	2.0K	-2%	$3.05	$6.1K
Aug 20, 2025	SERA	Chief Information Officer	Sell S	6.0K	-6%	$2.22	$13.3K
Aug 8, 2025	SERA	Chief Information Officer	Sell S	6.0K	-5%	$2.54	$15.1K

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

About Harrison Robert Gardner

This profile aggregates every SEC Form 4 insider transaction reported by Harrison Robert Gardner across all companies they trade. Open-market purchases (code P) and sales (code S) are the highest-signal, discretionary trades; grants (A), option exercises (M) and gifts (G) reflect compensation rather than conviction and carry no market price. Figures cover the selected period and update as new filings are ingested.