Gerdau (NYSE: GGB) officer sells 8,000 preferred shares, keeps RSUs

Rhea-AI Filing Summary

GERDAU S.A. officer Peres Cesar Obino da Rosa reported an open-market sale of 8,000 preferred shares on May 19, 2026 at $4.60 per share, a price translated from Brazilian reais using a Central Bank of Brazil exchange rate. Following this sale, he holds 8 preferred shares directly. In addition, he holds restricted stock units tied to 5,263 underlying preferred shares at an exercise price of $4.13 expiring on February 12, 2029, 4,987 underlying shares at $3.64 expiring on February 12, 2028, and 4,060 underlying shares at $3.87 expiring on February 12, 2027, providing continued equity exposure through future vesting or exercise.

Insider Trade Summary

Net Seller: 8,000 shares ($36,800)

Net Sell 4 txns

Insider Peres Cesar Obino da Rosa

Role Officer

Sold 8,000 shs ($37K)

Type	Security	Shares	Price	Value
Sale	Preferred shares	8,000	$4.60	$37K
holding	Restricted Stock Units	--	--	--
holding	Restricted Stock Units	--	--	--
holding	Restricted Stock Units	--	--	--

Holdings After Transaction: Preferred shares — 8 shares (Direct, null); Restricted Stock Units — 4,060 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Preferred shares sold: 8,000 shares Sale price per share: $4.60 per share Preferred shares held after sale: 8 shares +3 more

6 metrics

Preferred shares sold 8,000 shares Open-market sale on May 19, 2026

Sale price per share $4.60 per share Translated from Brazilian reais

Preferred shares held after sale 8 shares Direct ownership after May 19, 2026 sale

RSUs underlying shares (2029) 5,263 shares at $4.13 Restricted stock units expiring February 12, 2029

RSUs underlying shares (2028) 4,987 shares at $3.64 Restricted stock units expiring February 12, 2028

RSUs underlying shares (2027) 4,060 shares at $3.87 Restricted stock units expiring February 12, 2027

Key Terms

Restricted Stock Units, open-market sale, preferred shares, exercise price, +1 more

5 terms

Restricted Stock Units financial

"security_title: "Restricted Stock Units" and derivative positions with underlying preferred shares"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

open-market sale financial

"transaction_action: "open-market sale" for the 8,000 preferred shares"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

preferred shares financial

"security_title: "Preferred shares" and underlying_security_title in RSU entries"

Preferred shares are a type of investment that gives investors priority over common shareholders when it comes to receiving dividends and getting their money back if a company is sold or liquidated. Think of them as a safer, more predictable way to earn income from a company's profits, similar to a fixed-return investment, but without voting rights. This makes preferred shares appealing to those seeking stable income with a higher claim on assets than regular stockholders.

exercise price financial

"conversion_or_exercise_price values of 4.1300, 3.6400, and 3.8700 on RSUs"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

expiration date financial

"expiration_date fields in derivativeSummary entries for RSUs"

The expiration date is the deadline after which a financial contract, such as an option or a futures agreement, is no longer valid or can be exercised. It matters to investors because it determines the timeframe during which they can take action or benefit from the contract, similar to how a coupon or a food item has a limited period of usefulness. Once the expiration date passes, the contract loses its value or ability to be used.

Form 4 Insider Transactions: What Each Field Means →

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^*

Peres Cesar Obino da Rosa

(Last) (First) (Middle)

AVENUE DOUTORA RUTH DE CARDOSO, 8501

8TH FLOOR, PINHEIROS

(Street)

SAO PAULO SAO PAULO 05425-070

(City) (State) (Zip)

BRAZIL

(Country)

2. Issuer Name and Ticker or Trading Symbol
GERDAU S.A. [ GGB ]

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

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

2a. Foreign Trading Symbol
[GGBR]

3. Date of Earliest Transaction (Month/Day/Year)
05/19/2026

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
Preferred shares	05/19/2026		S		8,000	D	$4.6(1)	8	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
Restricted Stock Units	$3.87(1)							02/12/2027	02/12/2027	Preferred shares	4,060		4,060	D
Restricted Stock Units	$3.64(1)							02/12/2028	02/12/2028	Preferred shares	4,987		4,987	D
Restricted Stock Units	$4.13(1)							02/12/2029	02/12/2029	Preferred shares	5,263		5,263	D

Explanation of Responses:

1. The price is denominated in Brazilian reais and has been translated into U.S. dollars at the May 19, 2026 selling rate of R$5.0378per US$1.00, as reported by the Central Bank of Brazil.

	/s/ Cesar Obino da Rosa Peres	05/22/2026
	** 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)

FAQ

What insider transaction did GERDAU S.A. (GGB) report for Peres Cesar Obino da Rosa?

GERDAU S.A. reported that officer Peres Cesar Obino da Rosa sold 8,000 preferred shares on May 19, 2026, in an open-market transaction at $4.60 per share. This Form 4 filing also shows his remaining direct holdings and outstanding restricted stock units.

At what price were the 8,000 GERDAU (GGB) preferred shares sold?

The 8,000 preferred shares were sold at $4.60 per share, with the price originally denominated in Brazilian reais. It was translated into U.S. dollars using the May 19, 2026 exchange rate reported by the Central Bank of Brazil, according to the filing footnote.

How many GERDAU (GGB) preferred shares does Peres Cesar Obino da Rosa hold after the sale?

After selling 8,000 preferred shares, Peres Cesar Obino da Rosa holds 8 preferred shares directly. The Form 4 also shows several grants of restricted stock units that can convert into additional preferred shares in future years, extending his potential equity stake.

What restricted stock units linked to GERDAU (GGB) preferred shares does the officer hold?

He holds restricted stock units tied to 5,263 underlying preferred shares at a $4.13 exercise price, 4,987 at $3.64, and 4,060 at $3.87. These units have expiration dates in 2027, 2028, and 2029, respectively, indicating staggered future equity opportunities.

How is the currency conversion handled in this GERDAU (GGB) insider sale filing?

The filing explains that the share price is denominated in Brazilian reais and translated into U.S. dollars. It uses the May 19, 2026 selling exchange rate of R$5.0378 per US$1.00, as reported by the Central Bank of Brazil, for presentation purposes.

Does the GERDAU (GGB) Form 4 show remaining equity exposure for the reporting officer?

Yes. Although he sold 8,000 preferred shares and now directly holds 8 shares, he still has several blocks of restricted stock units. These RSUs are linked to underlying preferred shares with exercise prices between $3.64 and $4.13, expiring from 2027 to 2029.