Exhibit 99.1

São Paulo, May 5, 2021 – Gerdau S.A. (B3: GGBR4 / NYSE: GGB) announces its results for the first quarter of 2021. The consolidated financial statements of the Company are presented in Brazilian real (R$), in accordance with International Financial Reporting Standards (IFRS) and the accounting practices adopted in Brazil. The information in this report does not include the data of associates and jointly controlled entities, except where stated otherwise.

GERDAU’S PERFORMANCE IN 1Q21

Operating Results

Production and Shipments

In 1Q21, crude steel production remained in line with the same quarter last year. Compared to 4Q20, the decline in production is mainly explained by the postpone of planned maintenance stoppages at the Brazil BD from 4Q20 to 1Q21.

Steel shipments in 1Q21 grew in relation to the prior-year quarter, accompanying the recovery in key consumer sectors in the countries where Gerdau has operations. Compared to 4Q20, shipments remained at high levels, reduced primarily by the lower exports from Brazil.

Net Sales

Net sales increased in 1Q21 in relation to both 4Q20 and 1Q20. Note that net sales were influenced by the 23% appreciation in the average U.S. dollar against the Brazilian real in the last 12 months, which had a positive effect on sales from Gerdau’s operations in North America. Moreover, given the rise in raw material costs over recent months, the need arose to rebuild margins where the Company sought to maintain profitability levels. Compared specifically to 1Q20, net sales benefited from higher shipments as well as from the aforementioned factors.

Cost of Goods Sold

The growth in shipments combined with the higher costs for the main raw materials used by the Company led Costs of Goods Sold to increase by 50% between 1Q20 and 1Q21 and by 14% in relation to 4Q20. A highlight is the increase in two of the main elements composing costs: scrap consumed, which increased 77% on the prior year period and 34% sequentially (in Brazilian real), while iron ore rose 94% and 53%, respectively.

Gross Profit

Gross profit and gross margin expanded, explained by the 25% increase in net sales per ton sold and the 19% increase in cost per ton sold compared to 4Q20. This result was driven mainly by the strong performance of the U.S. and Brazilian construction industries. In addition, our operations benefited from the favorable moment in the commodity cycle, with global prices for steel and raw materials setting record highs.

Selling, General & Administrative Expenses

Selling, general and administrative expenses increased in relation to both comparison periods, but as a ratio of net sales decreased 0.6 p.p. from 4Q20, to 2.9%.

EBITDA & EBITDA Margin

1 – Non-accounting measure calculated in accordance with CVM Instruction 527.

2 – Non-accounting measure calculated by the Company. The Company presents Adjusted EBITDA to provide additional information on cash generation in the period.

3 - Accounting measure reported in the consolidated Income Statement.

Adjusted EBITDA in 1Q21 set an all-time high for the Company on a quarterly basis, while adjusted EBITDA margin was the highest since 2007. This result reflects the excellent scenario for the steel industry in all countries where Gerdau operates, combined with the efficiency of the teams in seizing the opportunities arising from this scenario.

EBITDA (R$ million) & EBITDA Margin (%)

Financial Result & Net Income

1 - Accounting measure disclosed in the consolidated Income Statement.

2 - Non-accounting measure calculated by the Company to show net profit adjusted by non-recurring events that influenced the result.

The financial result increased in 1Q21 compared to 1Q20 due to the effects from exchange variation on the Company’s foreign-denominated liabilities. In relation to 4Q20, note that the Company, as part of its liability management, carried out a bond repurchase operation in late 2020 to reduce its currency exposure to the U.S. dollar and consequently smooth the effects from exchange rate fluctuations.

Adjusted net income in 1Q21 also set a new record for the Company on a quarterly basis, supported by the higher EBITDA.

Dividends

On May 4, 2021, the Board of Directors of Gerdau S.A. approved the distribution of dividends in the amount of R$ 682.1 million (R$ 0.40 per share), to be paid as an advance on the minimum mandatory dividend for 2021, as stipulated in the Bylaws.

This dividend approved in 1Q21 already corresponds to nearly all the dividends distributed in fiscal year 2020. Management reaffirms its understanding that the best way to increase absolute dividends is through strong cash generation, which it has been delivering, enabling maintenance of its policy to distribute 30% of adjusted net income.

Record date: close of trading on May 14, 2021

Ex-dividend date: May 17, 2021

Payment date: May 26, 2021

Working Capital & Cash Conversion Cycle

The cash conversion cycle (working capital divided by daily net revenue in the quarter) returned to more balanced levels, from 49 days in December 2020 to 57 days in March 2021, due to the increases of 37% in accounts receivable and of 30% in inventories. Note that these are natural adjustments given the stronger global steel demand.

Working Capital (R$ million) & Cash Conversion Cycle (days)

Financial Liabilities

On March 31, 2021, gross debt was only 1% short term and 99% long term. The Company maintained its consolidated exposure denominated in U.S. dollar at the same level registered at the end of December 2020, at 77%, while consolidated exposure denominated in Brazilian real was 23% of total gross debt.

On March 31, 2021, 24% of cash was denominated in U.S. dollar.

The evolution in key debt indicators is shown below:

1 - Total capitalization = shareholders' equity + gross debt – interest on debt.
2 – Net debt = gross debt – interest on debt – cash, cash equivalents and financial investments.
3 – Adjusted EBITDA in the last 12 months.

The reduction in the net debt/EBITDA ratio from 1.25x on December 31, 2020 to 0.96x on March 31, 2021 is explained by the strong Adjusted EBITDA recorded in the first quarter of 2021, which was approximately 3.7 times higher than Adjusted EBITDA in the same quarter of 2020.

Note that this means that the Company’s management has achieved one of the goals of its financial policy approved by the Board of Directors, which is keeping the net debt/EBITDA ratio between 1.0x and 1.5x.

Gross Debt Maturity Schedule

(R$ billion)

At the end of March 2021, the nominal weighted average cost of gross debt was 4.83%, or 3.22% for the portion denominated in Brazilian real, 5.7% plus exchange variation for the portion denominated in U.S. dollar contracted by companies in Brazil and 4.12% for the portion contracted by subsidiaries abroad. On March 31, 2021, the average gross debt term was 8 years, with the debt maturity schedule well balanced and distributed over the coming years.

Investments

Capital expenditure amounted to R$ 435 million in 1Q21, with R$ 202 million allocated to general maintenance, R$ 50 million to maintenance of the Ouro Branco Mill and R$ 183 million to technological expansion and updating. Of the amount invested in the quarter, 47% was allocated to the Brazil BD, 17% to the Special Steel BD, 28% to the North America BD, 4% to the South America BD and 4% to Gerdau Next.

An update on the status of two investments made in 2020 follows:

GERDAU NEXT

Brasil ao Cubo

Gerdau made a financial contribution of R$ 60 million to the construtech Brasil ao Cubo in exchange for a one-third interest in its capital. The remaining interest in the company is mostly held by the company’s founding partners. With the newly acquired interest in the construtech, Gerdau advances its vision for innovating the future of construction through which it proposes to contribute by reducing the significant productivity gap in the construction industry by adopting new methods and technologies. Developed by Brasil ao Cubo, the off-site modular construction technique allows for delivering projects in their final version four times faster than using conventional model, as well as reducing waste and costs and accelerating the availability of the project for use.

Over the last six months, Gerdau Next has made important advances in implementing the strategy to diversify the Gerdau group in both businesses 100% under its control and under partnership models. Gerdau Next’s portfolio is composed of the companies G2L (multimodal logistics), G2Base (project foundations), Juntos Somos Mais (JV with Votorantim Cimentos and Tigre, including the acquisition of Triider), Brasil ao Cubo, the recently launched Gerdau Graphene, the startup accelerator Ventures Gerdau and Corporate Venture Capital Paris Ventures.

ESG Factors

Gerdau concluded its greenhouse gas inventory, which was audited by the Totum Institute and indicates a carbon intensity of 0.93 tCO2e/t of steel produced. This amount is below the average of the global steel industry of 1.83 tCO2e/t (tons of greenhouse gases emitted for each ton of steel produced) disclosed by the World Steel Association (worldsteel). Gerdau also adopted the curve methodology Marginal Abatement Cost Curve (MACC) and Marginal Energy Abatement Cost Curve (MEAC) for structuring its emissions reduction targets for the short, medium and long term. The goal of the study is to learn about the technologies available and under development that are pertinent to and feasible for the steel-making process used by the company, analyze which are eligible, prioritize and plan the initiatives and investments and then disclose them to the external public over the coming years.

Moreover, Gerdau, in partnership with other companies, constructed 40 ICU beds in São Paulo city adjacent to Vila Santa Catarina Municipal Hospital to serve patients exclusively through the National Health System (SUS). Delivered at end-April, the center is the third hospital facility that Gerdau has helped build in Brazil as part of its initiatives to support the fight against Covid-19. The project was structured using the modular construction technique developed by Brasil ao Cubo, which uses steel as the main raw material and allows for delivering projects in their final version four times faster than using traditional techniques, which helped to save more lives.

Gerdau also was part of a coalition of 12 Brazilian companies that donated, in early April, 5,000 oxygen concentrators to treat patients with Covid-19. The initiative required a joint investment of R$35 million in equipment, which were delivered to the Ministry of Health.

Free Cash Flow

Free cash flow in 1Q21 was positive R$ 1.1 billion, which reflects the record-high EBITDA noted earlier and proved important for rebuilding the Company's working capital. Over recent years, we have registered negative free cash flow in first quarters as a seasonal effect, which compares to the positive result in the first quarter of this year.

Free Cash Flow (R$ million)

Free Cash Flow, Quarterly (R$ million)

PERFORMANCE BY BUSINESS DIVISION (BD)

The information in this report is divided into four Business Divisions (BD) in accordance with Gerdau’s corporate governance, as follows:

NET SALES

EBITDA & EBITDA Margin

BRAZIL BD

1 – Includes iron ore sales.

Production and Shipments

Steel production in Brazil remains on a highly positive uptrend. According to data from the Brazilian Steel Institute (IABr), in the first quarter of 2021, Brazil produced 8.7 million tons of crude steel, up 6% from the same quarter last year. The highlight was the production of flat and long steel products, which increased by 8% in relation to 1Q20. Domestic sales rose 29% compared to 1Q20 to 5.9 million tons in 1Q21. In March alone, sales were 42% higher than in March 2020, representing the best performance since October 2013, according to the Institute.

For Gerdau, in the Brazil BD, crude steel production increased 4% in 1Q21 compared to 1Q20. This result was driven mainly by the performance of Brazil’s domestic market, supported by the main steel consumption sectors. Compared to 4Q20, the reduction was due to the planned maintenance stoppages occurred in 1Q21.

In this scenario, the Company's domestic sales registered strong growth of 31% in 1Q21 compared to 1Q20. The flexibility of the business model and proximity to customers and partners were essential to quickly capture the favorable scenario in all regions of Brazil. Only 4% of sales were directed to exports given the focus on the domestic market.

In 1Q21, 145,000 tonnes of iron ore were sold to third parties and 718,000 tonnes were consumed internally.

Operating Result

Net sales increased in 1Q21 compared to 1Q20, explained mainly by the higher shipments to the domestic market, better dilution of fixed costs and also reflecting the work that has been done in recent years in reducing and controlling costs and expenses. Shipments to the domestic market as a ratio of total sales increased from 84% in 1Q20 to 96% in 1Q21. That said and added to the changes in the international steel scenario and the costs of its main inputs, the Company has been making a move to recover and preserve its margins due to the high cost cycle of its main raw materials.

Cost of goods sold in 1Q21 increased materially in relation to both comparison periods, due to the higher costs of raw materials in general (i.e., the cost of scrap consumed increased over 100% in relation to 1Q20 and over 30% in relation to 4Q20, while the cost of iron ore increased over 90% and 50% in relation to 1Q20 and 4Q20, respectively).

Gross profit and gross margin expanded in relation to both comparison periods, driven by the better market mix, with 96% of shipments directed to the domestic market, where demand remained stronger. The change in mix led the increase in net sales per ton sold to outpace the increase in cost per ton sold.

In 1Q21, the Brazil BD delivered its best EBITDA ever on a quarterly basis. This result reflects the excellent scenario for the global steel industry, combined with the efficiency of the teams in seizing the opportunities arising from this scenario.

EBITDA (R$ million) & EBITDA Margin (%)

NORTH AMERICA BD

Production and Shipments

Steel production in 1Q21 decreased in relation to 1Q20, adjusting to the shipments necessary for the period. Note that the North America BD currently is operating near its full capacity, with the rolling mills at over 90% of their full capacity.

Shipments in 1Q21 compared to 1Q20 remained stable at high levels. Demand from the non-residential construction and industrial sectors remained at healthy levels. Total construction investments (CPIP) increased 7% in the 12 months to February, to US$ 1.4 trillion. Note that the leading indicator for the non-residential construction (ABI) recovered to expansion territory, reaching 55.6 in March 2021. The industrial sector also remained strong, as shown by the Institute for Supply Management (ISM) index, which reached 64.7 in March 2021 (above 50 indicates growth).

Operating Result

The growth in net sales in 1Q21 compared to 1Q20 was mainly due to the 23% appreciation in the average U.S. dollar rate against the Brazilian real in the period. Compared to 4Q20, the growth in net sales was due to the increase in net sales per ton sold (+19% in Brazilian real).

Cost of goods sold in 1Q21 increased compared to 1Q20 due to exchange variation effects, as mentioned above. In relation to 4Q20, COGS was impacted by the scrap cost, which increased 32% in Brazilian real in the comparison periods.

Gross profit and gross margin increased in 1Q21 in relation to 1Q20, explained by the better metals spread and the initiatives to streamline costs with production at full capacity.

EBITDA and EBITDA margin in 1Q21 grew in relation to both comparison periods, accompanying the evolution in gross profit and gross margin. Note that this was the highest quarterly EBITDA for the North America BD since 2008.

EBITDA (R$ million) & EBITDA Margin (%)

SOUTH AMERICA BD

Production and Shipments

Steel production and shipments in 1Q21 increased in relation to 1Q20, supported by the continued good performance of the construction industry, especially in Peru and Argentina. In relation to 4Q20, production and shipments contracted due to the very strong comparison base in terms of shipments.

Operating Result

Net sales increased in 1Q21 in relation to 1Q20 due to higher shipments and the strong correlation of these countries with international steel prices.

Cost of goods sold increased, in line with the higher shipments and the higher prices of raw materials, especially the increase of over 40% in in the cost of scrap consumed.

Gross profit and gross margin increased in 1Q21 compared to both periods, since the increase in net sales per ton sold surpassed the increase in costs per ton sold in the period.

EBITDA and EBITDA margin in 1Q21 set record highs for the division on a quarterly basis, reflecting the robust demand from the construction industry, mainly in Peru and Argentina, and the important contribution from the joint ventures in Colombia and the Dominican Republic.

EBITDA (R$ million) & EBITDA Margin (%)

SPECIAL STEEL BD

Production and Shipments

Steel production registered a slight reduction in relation to 1Q20. On the other hand, rolled steel production increased (+7%) to meet the gradual recovery in demand in Brazil and the United States.

Steel shipments registered strong growth in 1Q21 compared to 1Q20, reflecting the recovery of the automotive industry for the operations in Brazil, combined with the gradual recovery in shipments from the United States, which is an effect observed already in the prior quarter.

In Brazil, according to Anfavea, heavy vehicle production increased 34% in 1Q21 compared to 1Q20. Heavy vehicles require around 10 times more special steel than light vehicles. We also observed in Brazil an inventory rebuilding trend in the chain.

In the United States, vehicle sales increased 11% in 1Q21 compared to 1Q20, to 3.8 million vehicles. Heavy vehicle production, for example, rose 30%. We also have been observing a gradual recovery in demand from the oil and gas industry and related distribution activities.

Operating Result

The increase in net sales and cost of goods sold in 1Q21 compared to 1Q20 is mainly due to the growth in shipments driven by the recovery in demand mentioned above.

Gross profit and gross margin continued their uptrend in the period, supported by the economies of scale resulting from higher sales. Note that this division has been posting a gradual recovery, as shown by the increase in the capacity utilization rate from 64% in 1Q20 to 83% in 1Q21.

EBITDA and EBITDA margin increased in 1Q21 compared to both periods, accompanying the performance of gross profit and gross margin in the period. As a result, the Special Steel division returned to margin levels not seen since 2018.

EBITDA (R$ million) & EBITDA Margin (%)

THE MANAGEMENT

This document contains forward-looking statements. These statements are based on estimates, information or methods that may be incorrect or inaccurate and that may not occur. These estimates are also subject to risk, uncertainties and assumptions that include, among other factors: general economic, political and commercial conditions in Brazil and in the markets where we operate and existing and future government regulations. Potential investors are cautioned that these forward-looking statements do not constitute guarantees of future performance, given that they involve risks and uncertainties. Gerdau does not undertake and expressly waives any obligation to update any of these forward-looking statements, which are valid only on the date on which they were made.

* Adjusted net profit is a non-accounting measure calculated by the Company, reconciled with the financial statements and consists of net income (loss) adjusted by non-recurring events that influenced profit or loss, without cash effect.

GERDAU S.A.  

CONSOLIDATED STATEMENTS OF CASH FLOWS  

In thousands of Brazilian reais (R$)  

(Unaudited)