Nocopi director buys 1,500 shares in September

A NOCOPI TECHNOLOGIES INC director disclosed two small open-market share purchases totaling 1,500 shares.

Rhea-AI Filing Summary

NOCOPI TECHNOLOGIES INC (NNUP) director Eric Sites reported open-market purchases of the company’s common stock. He bought 1,000 shares on September 10, 2026 at $1.85 per share and 500 shares on September 11, 2026 at $1.80 per share, held as direct ownership. No Rule 10b5-1 trading plan is reported.

Insider Trade Summary

Net Buyer: 1,500 shares

Net Buy 2 txns

Insider Sites Eric

Role Director

Bought 1,500 shs ($3K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	500	$1.80	$900.00
Purchase	Common Stock	1,000	$1.85	$2K

Holdings After Transaction: Common Stock — 2,500 shares (Direct)

Key Figures

Shares purchased September 10, 2026: 1,000 shares Purchase price September 10, 2026: $1.85 per share Shares purchased September 11, 2026: 500 shares +3 more

6 metrics

Shares purchased September 10, 2026 1,000 shares Common Stock bought by director Eric Sites

Purchase price September 10, 2026 $1.85 per share Open-market or private transaction

Shares purchased September 11, 2026 500 shares Common Stock bought by director Eric Sites

Purchase price September 11, 2026 $1.80 per share Open-market or private transaction

Total shares purchased 1,500 shares Combined across both reported transactions

Approximate total purchase value $2,750 1,000 shares at $1.85 and 500 shares at $1.80

Key Terms

open market or private transaction, Form 4, direct ownership

3 terms

open market or private transaction financial

"Purchase in open market or private transaction"

Form 4 regulatory

"What insider transaction did NNUP report in this Form 4?"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

direct ownership financial

"which are reported as direct ownership"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did NNUP report in this Form 4?

NNUP reported that director Eric Sites purchased a total of 1,500 shares of Nocopi Technologies common stock in two open-market transactions on September 10 and 11, 2026, which are reported as direct ownership.

How many NNUP shares did the director buy on each date?

On September 10, 2026, the director bought 1,000 shares. On September 11, 2026, he bought an additional 500 shares of Nocopi Technologies common stock.

At what prices were the NNUP shares purchased by the director?

The purchases were reported at $1.85 per share for 1,000 shares on September 10, 2026 and $1.80 per share for 500 shares on September 11, 2026, both described as purchases in an open market or private transaction.

What was the total value of the NNUP shares bought by the director?

Based on the reported prices, the director’s purchases totaled about $2,750, consisting of 1,000 shares at $1.85 and 500 shares at $1.80 of Nocopi Technologies common stock.

Were the NNUP insider purchases made under a Rule 10b5-1 plan?

No. The Form 4 indicates the Rule 10b5-1 checkbox is not selected, so no Rule 10b5-1 trading plan is reported for these Nocopi Technologies share purchases by the director.

Does the Form 4 show the director’s total NNUP holdings after these trades?

No. The individual transactions are reported, but the Form 4 data here does not include a figure for total shares held following the transactions by the director.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/11/2026 - 05:36 PM Accepted by SEC EDGAR 09/11/2026 - 05:36 PM Learn about SEC filing dates

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).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Sites Eric

(Last) (First) (Middle)

480 SHOEMAKER ROAD

SUITE 104

(Street)

KING OF PRUSSIA PENNSYLVANIA 19406

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
NOCOPI TECHNOLOGIES INC/MD/ [ NNUP ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/10/2026

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

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

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

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	09/10/2026		P		1,000	A	$1.85	2,000	D
Common Stock	09/11/2026		P		500	A	$1.8	2,500	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:

	/s/ Eric Sites	09/11/2026
	** 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.
* Form 4: SEC 1474 (03-26)