1. Corporate Officers - A
2. Andersen Eric C.

Insider Trading History of Andersen Eric C.

The following table details the insider trading activities (stock purchases, stock sales, and stock option exercises) of Andersen Eric C. since 2018. This trader's CIK number is 1552411. At the time of last reporting, Andersen Eric C. was the Officer of Vertex, Inc.. (stock ticker symbol VERX). Also see all insider trading activities at Vertex, Inc..

Note that in the past ANDERSEN ERIC C. also reported insider trading activities as an insider of the following companies:

Yearly summary of insider trading at American Public Education Inc (APEI) by Andersen Eric C.

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2023	APEI	25,000	$100,625	0	$0	0	$0
2020	APEI	0	$0	1,667	$51,566	0	$0
2018	APEI	0	$0	3,500	$146,300	0	$0

Yearly summary of insider trading at Vertex, Inc. (VERX) by Andersen Eric C.

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2026	VERX	40,000	$516,400	0	$0	0	$0
2025	VERX	0	$0	0	$0	22,000	$55,000
2024	VERX	0	$0	150,000	$5,321,500	140,000	$350,000
2023	VERX	0	$0	25,121	$557,294	0	$0

Insider trading activities at 2 companies by Andersen Eric C.:

1. American Public Education Inc (APEI)

2. Vertex, Inc. (VERX)

Table 1. Insider trading of American Public Education Inc (APEI) by Andersen Eric C.

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2023-03-20	APEI	Buy	25,000	4.03	100,625
2020-08-31	APEI	Sale	1,667	30.93	51,566
2018-03-16	APEI	Sale	3,500	41.80	146,300

Table 2. Insider trading of Vertex, Inc. (VERX) by Andersen Eric C.

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2026-02-20	VERX	Buy	40,000	12.91	516,400
2025-03-04	VERX	Option Ex	22,000	2.50	55,000
2024-08-13	VERX	Option Ex	140,000	2.50	350,000
2024-08-13	VERX	Sale	140,000	36.16	5,062,680
2024-02-15	VERX	Sale	10,000	25.88	258,820
2023-11-20	VERX	Sale	10,000	26.24	262,390
2023-08-14	VERX	Sale	15,121	19.50	294,904

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Andersen Eric C. (Officer of Vertex, Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.

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