Harrison Robert Gardner

Chief Information Officer

1 company

Strong

Trades Analyzed

12M Win Rate

86.7%

Avg 3M Return

+13.7%

Avg 12M Return

+32.6%

Harrison Robert Gardner is a Chief Information Officer at SERA PROGNOSTICS, INC.. Recent SEC Form 4 filings include 0 buys and 12 sells.

Estimated insider holdings value: $151K based on current market prices.

Holdings by Company

SERAMar 11, 2026

Current Shares76.7K

Value$150.7K

Net Activity-100,198

Bought: 0Sold: 100.2K

Showing 10 filings (page 2)

Date	Ticker	Role	Type	Shares	Price	Value	Chg%	3M	12M
Aug 8, 2025	SERA Sera Prognostics, Inc.	Chief Information Officer	Sell	5,962	$2.54	$15,143.48	-5.2%	+8.9%	-
Jun 10, 2025	SERA Sera Prognostics, Inc.	Chief Information Officer	Sell	667	$1.48	$987.16	-0.6%	+112.8%	+34.2%
May 8, 2025	SERA Sera Prognostics, Inc.	Chief Information Officer	Sell	6,551	$2.44	$15,984.44	-5.4%	+29.7%	-11.3%
Mar 7, 2025	SERA Sera Prognostics, Inc.	Chief Information Officer	Sell	3,874	$4.16	$16,115.84	-3.1%	-63.0%	-55.3%
Mar 6, 2025	SERA Sera Prognostics, Inc.	Chief Information Officer	Sell	3,251	$4.16	$13,524.16	-2.5%	-59.0%	-53.5%
Feb 13, 2025	SERA Sera Prognostics, Inc.	Chief Information Officer	Sell	3,610	$4.28	$15,450.80	-3.4%	-47.3%	-37.9%
Feb 12, 2025	SERA Sera Prognostics, Inc.	Chief Information Officer	Sell	7,297	$4.58	$33,420.26	-6.4%	-45.2%	-39.4%
Feb 11, 2025	SERA Sera Prognostics, Inc.	Chief Information Officer	Sell	554	$3.97	$2,199.38	-0.5%	-42.4%	-35.7%
Jan 13, 2025	SERA Sera Prognostics, Inc.	Chief Information Officer	Sell	16,473	$7.27	$119,678.05	-4.5%	-47.2%	-43.1%
Nov 11, 2024	SERA Sera Prognostics, Inc.	Chief Information Officer	Sell	4,727	$7.32	$34,601.64	-3.5%	-40.2%	-63.8%