Bentley Systems accounting chief acquires 23 shares

The chief accounting officer's reported post-transaction position is 19,366 directly held Class B shares.

Rhea-AI Filing Summary

Bentley Systems Inc. Chief Accounting Officer Thomas F. Trimback acquired 23 shares of Class B Common Stock on September 29, 2026, as dividend equivalent rights accrued on awards granted previously; the rights vest on the same terms as those awards. The reported transaction price was $0 per share, and his resulting direct holdings were 19,366 shares. The reported total was adjusted to account for dividend equivalent rights incorrectly included in prior reports.

Insider Trade Summary

Grant/Award: 23 shares

Grant/Award 1 txn

Insider Trimback Thomas F

Role Chief Accounting Officer

Type	Security	Shares	Price	Value
Grant/Award	Class B Common Stock F1, F2	23	$0.00	$0.00

Holdings After Transaction: Class B Common Stock — 19,366 shares (Direct)

Footnotes (2)

1. F1. Represents dividend equivalent rights that accrued to the Reporting Person in connection with a dividend paid by the Issuer on awards previously granted and vest on the same terms as the awards to which they relate.
2. F2. Total has been adjusted to account for dividend equivalent rights incorrectly included in prior reports.

Key Figures

Class B Common Stock acquired: 23 shares Reported transaction price: $0 per share Direct holdings after transaction: 19,366 shares

3 metrics

Class B Common Stock acquired 23 shares September 29, 2026; dividend equivalent rights

Reported transaction price $0 per share September 29, 2026

Direct holdings after transaction 19,366 shares September 29, 2026

Key Terms

dividend equivalent rights, vest, Class B Common Stock

3 terms

dividend equivalent rights financial

"dividend equivalent rights that accrued to the Reporting Person"

Dividend equivalent rights are promises that mirror the cash payments shareholders get from a company’s profits, but they are paid to holders of certain awards (like stock options or restricted stock units) rather than to actual shares. Think of them as a paycheck top‑up that matches dividends while the award is not yet a real stock, and they matter to investors because they add to employee compensation costs and potential share dilution, affecting company profitability and per‑share value.

vest financial

"vest on the same terms as the awards"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

Class B Common Stock technical

"23 shares of Class B Common Stock"

A class B common stock is one of multiple types of a company’s ordinary shares that carries specific rights—often different voting power or dividend priority—compared with other classes. For investors it matters because those differences affect how much influence you have over company decisions, the income you might receive, and how freely the shares trade; think of it like owning a car with different keys: some keys let you start the engine and open the trunk, others only unlock the door.

FAQ

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

How many shares did BSY's chief accounting officer acquire?

Thomas F. Trimback, Bentley Systems Inc.'s chief accounting officer, acquired 23 shares of Class B Common Stock on September 29, 2026, as dividend equivalent rights. His reported direct holdings after the transaction were 19,366 shares.

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

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Available on EDGAR 10/01/2026 - 04:53 PM Accepted by SEC EDGAR 10/01/2026 - 04:53 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^*

Trimback Thomas F

(Last) (First) (Middle)

C/O BENTLEY SYSTEMS, INCORPORATED

685 STOCKTON DRIVE

(Street)

EXTON PENNSYLVANIA 19341

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
BENTLEY SYSTEMS INC [ BSY ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/29/2026

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
Class B Common Stock	09/29/2026		A(1)		23	A	$0.00	19,366(2)	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:

1. Represents dividend equivalent rights that accrued to the Reporting Person in connection with a dividend paid by the Issuer on awards previously granted and vest on the same terms as the awards to which they relate.

2. Total has been adjusted to account for dividend equivalent rights incorrectly included in prior reports.

	/s/ Michael T. Fischette, Attorney-in-Fact	10/01/2026
	** 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)