[Form 4] CSP INC /MA/ Insider Trading Activity

Rhea-AI Filing Summary

Joseph R. Nerges, a director of CSP Inc. (CSPI), reported two open-market purchases on 09/15/2025 totaling 2,200 shares. The transactions were reported on Form 4 and show acquisitions of 1,200 shares at $11.2088 and 1,000 shares at $11.205. Following these purchases, the filing reports total beneficial ownership of 1,395,063 shares by the reporting person. The filing is a routine Section 16 disclosure and contains no derivative transactions or additional commentary.

Positive

• Director purchase reported: Joseph R. Nerges acquired a total of 2,200 shares on 09/15/2025, indicating insider buying activity
• Clear disclosure: Form 4 lists transaction dates, prices ($11.2088 and $11.205), and resulting beneficial ownership (1,395,063 shares)

Negative

• None.

Insights

Financial Analyst

TL;DR Director purchased 2,200 shares on 09/15/2025, increasing reported beneficial ownership to 1,395,063 shares.

The purchases are small, specific open-market acquisitions documented at prices near $11.21 per share and reported under Section 16. As a routine Form 4 disclosure, this confirms insider buying but does not include firm-level operational or financial changes. No options, grants, or dispositions were reported.

Corporate Governance Expert

TL;DR A company director reported modest common-stock purchases and updated beneficial ownership accordingly.

The filing identifies Joseph R. Nerges as a director and shows direct purchases only. The disclosure meets Section 16 reporting requirements and contains a manual signature dated 09/16/2025. There are no indications of coordinated group filings or indirect ownership structures disclosed in this form.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

NERGES JOSEPH R

(Last) (First) (Middle)

1726 BUNDY ST

(Street)

SCRANTON PA 18508

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
CSP INC /MA/ [ CSPI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
09/15/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/15/2025		P		1,200	A	$11.2088	1,394,063	D
Common Stock	09/15/2025		P		1,000	A	$11.205	1,395,063	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

	/s/ Joseph R. Nerges	09/16/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did CSPI director Joseph R. Nerges report on Form 4?

He reported two purchases on 09/15/2025 totaling 2,200 shares at prices of $11.2088 and $11.205, with total beneficial ownership of 1,395,063 shares.

Was the Form 4 filed jointly or by one reporting person for CSPI?

The filing indicates it was filed by one reporting person (Joseph R. Nerges).

Did the Form 4 report any derivative transactions for CSPI?

No. Table II for derivative securities contains no reported transactions; only non-derivative common stock purchases were reported.

What relationship does the reporting person have to CSP Inc. (CSPI)?

The form lists Joseph R. Nerges as a Director of the issuer.

When was the Form 4 signed?

The signature block shows the form was signed by /s/ Joseph R. Nerges on 09/16/2025.