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B3 · BRL

ISAE3

Isa Energia Brasil SA

R$34.08+4.32% (R$1.41)
Day's range
R$34.08 – R$34.30
Day's volume
R$20.4K
52-week range
R$28.10 – R$36.89

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See how ISAE3 weighs in your net worth, what it has paid you and how far it is from your target allocation.

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ISAE3 in numbers

Market cap
R$21B
P/E
8.51
P/B
1.08
Dividend yield (12m)
5.43%
Net debt/EBITDA
6.32

The 12-month dividend yield of ISAE3 is 5.43%, below its 5-year average of 8.26%.

ISAE3 price history

10/01/202509/30/2026
Compare with

ISAE3 risk and return

Monthly closes adjusted for splits and distributions.

Metric12 months36 months60 months
Return+15.36%+41.65%+38.62%
Volatility (annualized)12.83%16.85%16.03%
Largest drawdown-9.91%-13.99%-16.51%
Positive months8/1221/3632/60

How much did investing in ISAE3 return?

R$1,000.00 invested on 09/01/2021 would be worth R$1,408.98 today.

Value today in ISAE3
R$1,408.98
Return over the period
+40.90%
Return per year
+7.10%
In the Ibovespa
R$1,657.66

With dividends reinvested, before taxes and costs, at month-end closes. Past returns do not guarantee future ones.

ISAE3 fundamentals

Valuation

  • P/E
    8.51
  • P/B
    1.08
  • EV/EBITDA
    10.34
  • EV/EBIT
    10.42
  • EV/Revenue
    5.05
  • P/EBIT
    4.05
  • P/S
    1.96
  • P/OCF
    -16.87
  • P/FCF
    -30.86
  • Earnings yield
    9.60%
  • PEG ratio
    —
  • Earnings per share
    R$4.01
  • Book value per share
    R$31.51

Debt

  • Net debt
    R$32.9B
  • Net debt/EBITDA
    6.32
  • Net debt/Equity
    1.46
  • Debt/Equity
    1.54
  • Current ratio
    5.28
  • Quick ratio
    5.22
  • Cash ratio
    1.29

Efficiency

  • Gross margin
    45.82%
  • EBITDA margin
    48.78%
  • Operating margin
    48.44%
  • Net margin
    26.95%
  • Asset turnover
    0.21

Profitability

  • ROE
    12.71%
  • ROA
    5.76%
  • ROIC
    7.90%
  • Payout
    46.20%

Growth

  • Revenue CAGR (5 years)
    21.86%
  • Earnings CAGR (5 years)
    -4.37%
  • Revenue growth (year)
    18.13%
  • Earnings growth (year)
    -30.03%
  • Revenue growth (quarter)
    30.64%
  • Earnings growth (quarter)
    -13.25%

What is ISAE3's fair price?

Two classic value formulas, with today's numbers. The current price is R$34.08.

Graham's fair price
R$53.29
56.36% above the price

√(22.50 × R$4.01 × R$31.51)

Benjamin Graham paid no more than a P/E of 15 and a P/B of 1.5. Their product, 22.5, times earnings (EPS) and book value per share gives the fair price.

Bazin's ceiling price
R$44.21
29.73% above the price

R$2.65 (5-year average) ÷ 6%

Décio Bazin only bought stocks yielding at least 6% a year in distributions. The ceiling price is the average dividend per share of recent years over 6%.

Graham ignores growth and debt; Bazin assumes past distributions repeat. They are references to compare, not a buy recommendation.

ISAE3's indicators by year

Multiples at each year's closing price; margins and returns from that year's statements.

Indicator20252024202320222021202020192018
P/E9.155.748.228.436.645.7510.2924.12
P/B1.051.001.311.151.351.371.324.02
EV/EBITDA12.358.229.939.037.015.528.7519.92
Dividend yield15.87%7.23%3.00%1.20%13.98%3.63%4.89%72.97%
Earnings per shareR$3.72R$5.31R$4.31R$3.43R$4.58R$5.10R$2.68R$2.86
Book value per shareR$32.54R$30.46R$27.00R$25.10R$22.45R$21.44R$20.89R$17.15
ROE11.42%17.43%15.97%13.68%20.41%23.80%12.81%16.65%
ROIC7.39%10.30%10.80%10.34%13.62%18.38%11.86%13.34%
Gross margin39.35%46.91%59.67%60.17%74.48%69.27%71.19%77.23%
EBITDA margin44.27%64.88%63.83%64.54%80.59%120.31%71.44%77.50%
Net margin26.01%43.91%45.71%41.50%54.55%90.94%53.33%59.09%
Net debt/EBITDA6.974.334.043.612.511.171.071.53

ISAE3's financial statements

Line202520242023202220212020
Net revenueR$9.4BR$8BR$6.2BR$5.5BR$5.5BR$3.7B
Cost of revenue-R$5.7B-R$4.2B-R$2.5B-R$2.2B-R$1.4B-R$1.1B
Gross profitR$3.7BR$3.7BR$3.7BR$3.3BR$4.1BR$2.6B
EBITDAR$4.2BR$5.2BR$4BR$3.5BR$4.5BR$4.4B
EBITR$4.1BR$5.1BR$3.9BR$3.5BR$4.4BR$4.4B
Financial result-R$1.4B-R$962.6M-R$821.6M-R$812.2M-R$631M-R$209.2M
Income before taxR$2.8BR$4.2BR$3.1BR$2.7BR$3.8BR$4.2B
Income tax-R$269.3M-R$615.9M-R$228.6M-R$358.3M-R$768.4M-R$835.4M
Net incomeR$2.4BR$3.5BR$2.8BR$2.3BR$3BR$3.4B

Figures the company filed with the CVM. Debt excludes leases; each quarter is that quarter alone.

Does ISAE3 pay dividends?

Announced payments
TypeLast day to ownPaymentPer share
Interest on equity11/25/202612/07/2026R$0.19
Interest on equity11/09/202612/07/2026R$0.19
Interest on equity10/08/202612/07/2026R$0.19

Dividend yield per year

  • 26.36%2017
  • 72.97%2018
  • 4.89%2019
  • 3.63%2020
  • 13.98%2021
  • 1.20%2022
  • 3.00%2023
  • 7.23%2024
  • 15.87%2025
  • 3.45%2026
Payment history
TypeLast day to ownPaymentPer share
Dividend04/17/202604/29/2026R$0.14
Dividend04/02/202604/29/2026R$0.14
Dividend03/12/202604/29/2026R$0.14
Interest on equity02/26/202603/31/2026R$0.25
Interest on equity01/29/202602/25/2026R$0.25
Interest on equity12/29/202501/28/2026R$0.25
Interest on equity12/17/202512/30/2025R$0.22
Interest on equity11/24/202512/12/2025R$0.22
Interest on equity10/30/202511/28/2025R$0.22
Interest on equity03/11/202503/21/2025R$0.79
Interest on equity02/11/202502/21/2025R$0.79
Interest on equity01/10/202501/21/2025R$0.79
See all 111 distributions
Earlier distributions
TypeLast day to ownPaymentPer share
Interest on equity01/09/202501/21/2025R$2.36
Interest on equity12/13/202304/10/2024R$1.96
Interest on equity12/13/202301/15/2024R$0.24
Interest on equity12/26/202204/11/2023R$1.06
Dividend12/22/202101/18/2022R$0.17
Interest on equity12/22/202101/17/2022R$0.17
Interest on equity11/03/202111/16/2021R$0.78
Dividend11/03/202111/16/2021R$0.53
Dividend07/06/202107/15/2021R$0.50
Dividend03/30/202105/21/2021R$0.80
Dividend02/25/202105/21/2021R$0.81
Dividend12/16/202001/18/2021R$0.18
Interest on equity12/16/202001/18/2021R$0.66
Dividend11/04/202011/13/2020R$0.52
Dividend07/06/202007/16/2020R$0.15
Interest on equity04/16/202004/29/2020R$0.23
Interest on equity12/13/201901/20/2020R$0.16
Dividend11/08/201912/03/2019R$0.45
Interest on equity11/08/201912/03/2019R$0.34
Interest on equity08/02/201908/19/2019R$0.56
Interest on equity12/06/201812/17/2018R$3.59
Dividend12/06/201812/17/2018R$3.84
Dividend06/05/201806/18/2018R$4.62
Dividend04/17/201806/15/2018R$0.51
Dividend11/17/201711/28/2017R$2.22
Dividend06/01/201706/13/2017R$0.82
Dividend12/02/201601/20/2017R$0.83
Dividend06/21/201606/30/2016R$0.67
Dividend11/25/201512/07/2015R$1.39
Dividend05/06/201506/29/2015R$0.19
Dividend05/26/201506/08/2015R$0.69
Dividend11/24/201412/04/2014R$1.02
Interest on equity08/12/201408/28/2014R$0.20
Dividend04/01/201407/31/2014R$0.20
Interest on equity12/23/201301/30/2014R$1.31
Dividend06/29/201207/27/2012R$0.64
Interest on equity06/29/201207/27/2012R$0.42
Interest on equity04/16/201204/30/2012R$0.42
Dividend01/16/201201/30/2012R$1.11
Interest on equity01/16/201201/30/2012R$0.42
Interest on equity10/10/201110/31/2011R$0.40
Dividend10/10/201110/31/2011R$1.14
Dividend07/06/201107/28/2011R$1.06
Dividend04/29/201107/28/2011R$0.11
Interest on equity04/06/201104/29/2011R$0.43
Dividend04/06/201104/29/2011R$1.19
Dividend01/14/201101/28/2011R$0.74
Interest on equity01/14/201101/28/2011R$0.42
Interest on equity10/07/201010/25/2010R$0.42
Dividend10/07/201010/25/2010R$0.96
Interest on equity07/07/201007/23/2010R$0.41
Dividend07/07/201007/23/2010R$0.42
Dividend05/04/201007/01/2010R$0.51
Interest on equity04/08/201004/20/2010R$0.41
Dividend04/08/201004/20/2010R$0.86
Dividend01/11/201001/22/2010R$1.07
Interest on equity12/15/200912/30/2009R$0.41
Interest on equity10/06/200910/21/2009R$0.41
Dividend10/06/200910/21/2009R$0.69
Dividend07/06/200907/21/2009R$0.41
Interest on equity06/22/200907/01/2009R$0.43
Dividend04/15/200904/24/2009R$0.71
Interest on equity04/13/200904/24/2009R$0.42
Dividend01/12/200901/20/2009R$0.82
Interest on equity12/12/200812/30/2008R$0.40
Dividend10/09/200810/17/2008R$0.37
Interest on equity10/09/200810/17/2008R$0.40
Interest on equity07/08/200807/17/2008R$0.39
Dividend07/08/200807/17/2008R$0.97
Dividend04/10/200804/18/2008R$0.45
Interest on equity03/31/200804/18/2008R$0.41
Dividend01/21/200802/11/2008R$1.14
Interest on equity12/13/200701/18/2008R$0.26
Interest on equity11/05/200711/19/2007R$1.34
Dividend10/01/200710/17/2007R$1.16
Dividend07/10/200707/18/2007R$1.61
Dividend04/20/200606/19/2006R$0.65
Interest on equity12/28/200501/13/2006R$0.60
Interest on equity06/23/200512/01/2005R$0.36
Interest on equity09/22/200510/07/2005R$0.64
Interest on equity12/02/200406/23/2005R$0.32
Interest on equity05/20/200412/02/2004R$0.18
Interest on equity09/18/200306/21/2004R$0.53
Interest on equity05/22/200308/27/2003R$0.46
Dividend04/25/200306/24/2003R$0.09
Interest on equity12/26/200202/14/2003R$0.33
Interest on equity07/04/200208/23/2002R$0.36
Dividend04/26/200206/25/2002R$0.22
Interest on equity12/18/200106/25/2002R$0.08
Interest on equity07/05/200112/28/2001R$0.21
Dividend04/24/200106/22/2001R$0.06
Interest on equity12/21/200006/22/2001R$0.21
Dividend04/16/2012—R$0.21
Dividend04/16/2012—R$0.33
Interest on equity07/06/2011—R$0.42
Dividend03/19/2007—R$0.41
Dividend03/19/2007—R$0.57
Interest on equity05/25/2006—R$0.18
Interest on equity10/03/2002—R$0.21
Splits, reverse splits and bonus shares
EventLast day to ownRatio
Split04/05/20194 for 1
Reverse split08/14/20071 for 1000

About Isa Energia Brasil

Sector
Energia
Segment
Energia Elétrica
Listing segment
Level 1
Tag along
80.00%
Free float
66.45%
Shares issued
238.17M common · 465.16M preferred
Average daily trading
R$104.7K
Listed since
07/26/1999
CNPJ
02.998.611/0001-04

ISA Energia Brasil, anteriormente conhecida como ISA CTEEP, é uma concessionária privada de transmissão de energia elétrica com ações na B3 sob os códigos ISAE3 e ISAE4. A companhia opera uma extensa malha de linhas e subestações, com contratos de concessão de longo prazo e receita regulada, desempenhando papel relevante no escoamento da energia gerada no país, especialmente na região Sudeste. O negócio é centrado em disponibilidade e confiabilidade da rede de transmissão, com investimentos contínuos em expansão, reforço e modernização de ativos. Como transmissora, a empresa tem exposição menor ao risco hidrológico e ao preço de energia do que geradoras e comercializadoras, mas depende de execução de obras, disciplina regulatória e eficiência operacional. No setor elétrico brasileiro, está entre as empresas de referência em infraestrutura de alta tensão.

Investor website
ShareholdersAs of 12/31/2026, from the Formulário de Referência filed with the CVM.
ShareholderCommonPreferredTotal
Isa Capital do Brasil S.A.Controlling96.93%1.11%33.56%
AXIA ENERGIA S.A.2.23%25.31%17.49%
AXIA ENERGIA S.A.0.01%2.84%1.88%
Outros0.83%70.75%47.07%

Questions about ISAE3

How much is ISAE3 today?

ISAE3 is at R$34.08 (4.32% on the day), last traded on 09/30/2026.

How much did ISAE3 pay in dividends in 2025?

ISAE3 paid R$5.40 per share in 2025, a dividend yield of 15.87%.

When is the next ISAE3 dividend?

The next announced payment is R$0.19 per share on 12/07/2026.

What are the P/E and P/B of ISAE3?

ISAE3 trades at a P/E of 8.51 and a P/B of 1.08.

How much did ISAE3 return in 12 months?

ISAE3 returned 15.36% in 12 months, with annualized volatility of 12.83% and a largest drawdown of -9.91%.

What sector is ISAE3 in?

Isa Energia Brasil is in the Energia sector, Energia Elétrica segment.