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Alamos Gold Reports Fourth Quarter 2021 Production and Provides Three-Year Production and Operating Guidance High-return organic growth to drive production higher at significantly lower costs over the next three years

Corporate Updates

ALAMOS GOLD INC.

Brookfield Place, 181 Bay Street, Suite 3910, P.O. Box #823

Toronto, Ontario, Canada M5J 2T3

Telephone: (416) 368-9932 or 1 (866) 788-8801

All amounts are in United States dollars, unless otherwise stated.

F O R I M M E D I A T E R E L E A S E

W E B S I T E : w w w . a l a m o s g o l d . c o m T R A D I N G S Y M B O L : T S X : A G I N Y S E : A G I

Alamos Gold Reports Fourth Quarter 2021 Production and Provides Three-Year

Production and Operating Guidance

High-return organic growth to drive production higher at significantly lower costs over

the next three years

Toronto, Ontario (January 17, 2022) – Alamos Gold Inc. (TSX:AGI; NYSE:AGI) (“Alamos” or

the “Company”) today reported fourth quarter and annual 2021 production. The Company also

provided three-year production and operating guidance.

“With stronger production in the fourth quarter, we met our revised full year 2021 guidance.

This was driven by strong performances through the year from both Young-Davidson and

Island Gold, with the former achieving record mining rates and free cash flow. This offset a

challenging year at Mulatos as we work through a transitional phase with higher costs until La

Yaqui Grande comes online in the second half of 2022. This temporary increase in costs at

Mulatos and industry-wide inflation are the key drivers of higher consolidated costs in 2022,

though we expect a significant improvement in costs in 2023 and beyond,” said John A.

McCluskey, President and Chief Executive Officer.

“We are pleased to be providing our inaugural three-year guidance which outlines our strong

outlook. Our key high-return growth projects remain on track and are expected to support

higher production at substantially lower costs in the years ahead. The completion of La Yaqui

Grande will be the key near-term driver of lower costs, and Island Gold will be the primary

driver of significantly lower costs over the longer term with the Phase III expansion. These

high-return reinvestments are fully funded and form a key part of our sustainable business

model that can support growing returns to our stakeholders over the long term,” Mr.

McCluskey added.

Fourth Quarter and Full Year 2021 Operating Highlights

• Met 2021 annual production guidance: production of 457,200 ounces of gold in

2021 was in line with revised production guidance and represented a 7% increase

from 2020. This included fourth quarter production of 112,500 ounces, an increase

from the third quarter, with strong performances at Island Gold and Young-Davidson

offsetting lower production from Mulatos

• Costs expected to meet 2021 guidance: total cash costs and all-in sustaining costs

for 2021 have not been finalized but are expected to be consistent with revised full

year guidance of $790 to $810 per ounce and $1,120 to $1,140 per ounce,

respectively

• Record revenues: sold 112,966 ounces of gold in the fourth quarter at an average

realized price of $1,797 per ounce for revenues of $203 million. Full year sales totaled

457,517 ounces of gold at an average realized price of $1,800 per ounce for record

revenues of $824 million

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2 | ALAMOS GOLD INC

Three Year Guidance Overview1 – Operating Mines

• Stable production in 2022 with 4% growth expected in 2023: production is

expected to be between 440,000 and 480,000 ounces in 2022, consistent with 2021,

and increase approximately 4% (based on the mid-point of guidance) to between

460,000 and 500,000 ounces in 2023 and 2024. The completion of the Phase III

expansion at Island Gold is expected to drive a further increase in production in 2025

with additional growth potential from Lynn Lake

• Total cash cost guidance of $875 to $925 per ounce in 2022, improving

substantially to $650 to $750 per ounce in 2024: costs are expected to increase in

2022, reflecting industry-wide cost inflation and temporarily higher costs at Mulatos.

Costs at Mulatos and on a consolidated basis are expected to decrease starting in the

second half of 2022 with the commencement of low-cost production from La Yaqui

Grande. Island Gold is expected to contribute to lower costs in 2024, along with a

further reduction in costs following the expected completion of the Phase III expansion

in 2025

• All-in sustaining cost (“AISC”) guidance of $1,190 to $1,240 per ounce in 2022,

improving to $950 to $1,050 per ounce in 2024: consistent with total cash costs,

AISC are expected to decrease approximately 18% from 2022 to 2024 (based on the

mid-point of guidance), reflecting lower costs at Mulatos and Island Gold. AISC are

expected to decrease further in 2025 with the completion of the Phase III expansion at

Island Gold

• Total capital guidance, excluding capitalized exploration, of $305 to $345 million

in 2022: this includes $290 to $330 million of capital at producing mines and is down

slightly from 2021 guidance with lower capital at La Yaqui Grande and Young-

Davidson more than offsetting the ramp up in spending on the Phase III expansion at

Island Gold. Capital spending for producing mines is expected to decrease

approximately 23% in 2023 to between $220 and $260 million, reflecting the

completion of construction of La Yaqui Grande, and remain at similar levels in 2024.

Total capital is expected to decline further following the completion of the Phase III

expansion at Island Gold in 2025. The total capital budget for 2022 includes:

o Sustaining capital guidance of $90 to $105 million: down approximately

17% from 2021, reflecting lower sustaining capital at Mulatos. Sustaining

capital is expected to remain at similar levels through 2024

o Growth capital guidance for producing mines of $200 to $225 million:

consistent with 2021 with the majority related to the Phase III expansion at

Island Gold and completing construction at La Yaqui Grande

• Exploration budget of $40 million: with more than half allocated to following up on

ongoing exploration success at Island Gold

• Fully funded growth: the Phase III expansion at Island Gold and La Yaqui Grande

are expected to be funded through ongoing cash flow and existing cash. The Company

expects to generate positive free cash flow in the second half of the year as costs and

capital spending decrease with the start of production at La Yaqui Grande

• Strong ongoing returns to shareholders: including the existing $0.10 per share

annualized dividend (paid quarterly) and planned share repurchases under the Normal

Course Issuer Bid. In 2021, the Company returned approximately $51 million to

shareholders between dividends and share repurchases, representing a combined

yield of approximately 1.8% at current share prices

1 Guidance statements in this release are forward-looking information. See the Assumptions and Sensitives section of this release along with the

cautionary note at the end of this release.

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Upcoming 2022 catalysts

• 2021 year-end Mineral Reserve and Resource update: February 2022

• La Yaqui Grande commercial production: Q3 2022

• Island Gold Phase III expansion updated mine plan: mid-2022. This will incorporate

the significant growth in high-grade Mineral Reserves and Resources since the

completion of the July 2020 study into an optimized mine plan which is expected to

enhance already attractive economics and the value of the operation

• Lynn Lake completion of permitting and construction decision: H2 2022

Fourth Quarter and Full Year 2021 Operating Results

Q4 2021 Q4 2020 2021 2020(2)

Revised 2021

Guidance(1)

Gold production (ounces)

Young-Davidson 51,900 48,000 195,000 136,200 190,000 – 205,000

Island Gold 37,500 41,200 140,900 139,000 130,000 – 145,000

Mulatos 23,100 31,200 121,300 150,800 135,000 – 145,000

Total gold production 112,500 120,400 457,200 426,800 455,000 – 495,000

(1) 2021 production guidance for Mulatos was revised lower on October 27, 2021. Production guidance for Young -Davidson and Island Gold was

unchanged from initial 2021 guidance.

(2) 2020 total production included 800 ounces from El Chanate.

2022 Guidance

2022 Guidance 2021 Revised

Guidance (5)

Young-Davidson Island Gold Mulatos Other (2) Total Total

Gold production (000 oz) 185 - 200 125 - 135 130 - 145 440 – 480 457 (actual)

Cost of sales, including

amortization ($ millions)(3) $610

Cost of sales, including

amortization ($/oz)(3) $1,325

Total cash costs ($/oz)(1)(5) $850 - 900 $550 - 600 $1,225 - 1,275 — $875 - 925 $790 - 810

All-in sustaining costs ($/oz)(1)(5) $1,190 - 1,240 $1,120 - 1,140

Mine-site all-in sustaining costs

($/oz)(1)(4)(5) $1,125 - 1,175 $850 - 900 $1,325 - 1,375 —

Capital expenditures ($ millions)

Sustaining capital(1) $50 - 55 $35 - 40 $5 - 10 — $90 - 105 $110 - 125

Growth capital(1) $5 - 10 $145 - 160 $50 - 55 $15 $215 - 240 $210 - 225

Total Sustaining and Growth

Capital(1) $55 – 65 $180 – 200 $55 – 65 $15 $305 - 345 $320 - 350

Capitalized exploration(1) $4 $20 — $3 $27 $34

Total capital expenditures and

capitalized exploration(1) $59 - 69 $200 - 220 $55 - 65 $18 $332 - 372 $354 - 384

(1) Refer to the "Non-GAAP Measures and Additional GAAP" disclosure at the end of this press release for a description of these measures.

(2) Includes growth capital and capitalized exploration at the Company's development projects (Lynn Lake and Esperanza).

(3) Cost of sales includes mining and processing costs, royalties, and amortization expense, and is calculated based on the mid-point of total cash

cost guidance.

(4) For the purposes of calculating mine-site all-in sustaining costs at individual mine sites, the Company does not include an allocation of corporate

and administrative and share based compensation expenses to the mine sites.

(5) 2021 production and cost guidance revised on October 27, 2021.

Gold production in 2022 is expected to remain at similar levels as 2021 and weighted towards

the second half of the year (55% of total production) given the anticipated start of production

at La Yaqui Grande mid-year. Total cash costs and AISC are expected to decrease through

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4 | ALAMOS GOLD INC

the year and be significantly lower in the second half of 2022, reflecting the start of low-cost

production from La Yaqui Grande.

Full year AISC are expected to increase approximately $85 per ounce, or 8% from 2021

(based on the mid-point of guidance). The primary driver of the increase is approximately 5%

cost inflation, which is being experienced industry-wide, and a temporary increase in costs at

Mulatos as the operation transitions from mining of higher-cost Mulatos and stockpiled ore, to

the higher grade and lower cost La Yaqui Grande mine. This temporary increase in costs at

Mulatos is partially offset by lower sustaining capital at the operation with the stripping of the

El Salto portion of the main Mulatos pit largely completed in 2021.

Cost guidance continues to include COVID-19 testing and other related health and safety

costs across all three operating mines. Full year production and cost guidance assumes no

significant operational interruptions due to COVID-19.

Capital spending is expected to be higher during the first half of the 2022 and trend lower

during the second half of the year following the completion of construction of La Yaqui

Grande. Approximately 60% of the 2022 capital budget is expected to be spent during the first

half of the year.

2022 – 2024 Guidance: Operating Mines

2022 2023 2024

Gold Production

Young-Davidson 000 oz 185 – 200 185 – 200 185 – 200

Island Gold 000 oz 125 – 135 115 – 125 140 – 155

Mulatos 000 oz 130 – 145 160 – 175 135 – 145

Total gold production 000 oz 440 – 480 460 – 500 460 – 500

Total cash costs(1) $/oz $875 – 925 $775 – 875 $650 – 750

All-in Sustaining costs(1),(2) $/oz $1,190 – 1,240 $1,075 – 1,175 $950 – 1,050

Sustaining capital(1),(3) $ millions $90 – 105 $95 – 110 $95 – 110

Growth capital(1),(3) $ millions $200 – 225 $125 – 150 $135 – 160

Total sustaining & growth capital(1),(3)

(Operating mines; ex. Exploration) $ millions $290 – 330 $220 – 260 $230 – 270

(1) Refer to the “Non-GAAP Measures and Additional GAAP” disclosure at the end of this press release for a description of these measures.

(2) All-in sustaining cost guidance for 2023 and 2024 includes the same assumptions for G&A and stock based compensation as included in 2022.

(3) Sustaining and growth capital guidance is for producing mines and excludes capital for Lynn Lake and other development projects, and

capitalized exploration.

(4) 2023 and 2024 Cost of sales guidance has not been provided given amortization charges are based on reserves and resources at the end of

each of these years and cannot be reasonably estimated at this time.

Gold production is expected to increase approximately 4% in 2023, driven by higher

production from the Mulatos District given a full year of production from La Yaqui Grande, as

well as ongoing production from the main Mulatos operation. Company-wide gold production

is expected to remain at similar levels in 2024 with higher production from Island Gold

offsetting lower production from Mulatos.

Total cash costs and AISC are expected to decrease 8% and 7%, respectively, in 2023,

reflecting significantly lower costs at Mulatos with La Yaqui Grande ramped up and operating

for the full year. A more significant improvement in costs is expected in 2024 with a further

decrease in costs at Mulatos, with La Yaqui Grande providing the majority of production, and

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5 | ALAMOS GOLD INC

lower costs at Island Gold, reflecting the mining and processing of higher grades. Total cash

cost and AISC are expected to decrease 22% and 18%, respectively, between 2022 and

2024. Both are expected to decrease further following the completion of the Phase III

expansion at Island Gold in 2025.

Capital spending at existing operations (excluding Lynn Lake and other development projects)

is expected to decrease 23% in 2023, primarily driven by lower capital at Mulatos following the

completion of construction at La Yaqui Grande in 2022. Capital spending at existing

operations is expected to remain at similar levels in 2024 and decrease substantially following

the completion of the Phase III expansion at Island Gold in 2025. Sustaining capital spending

at existing operations is expected to remain relatively stable over the next several years at

approximately $90 to $110 million per year.

440-480 460-500 460-500

~$1,215

~$1,125

~$1,000

-100

100

300

500

700

900

1100

1300

0

100

200

300

400

500

600

700

2022E 2023E 2024E

Production (000 oz)

Young-Davidson Island Gold Mulatos AISC ($/oz)

$290-330

$220-260 $230-270

$0

$50

$100

$150

$200

$250

$300

2022E 2023E 2024E

Capital ($M)

Sustaining capital Growth capital

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Young-Davidson

Young-Davidson

Q3 YTD

2021 Q4 2021 2021A 2021 Revised

Guidance (3) 2022 Guidance

Gold production 000 oz 143 52 195 190 – 205 185 – 200

Total cash costs(1) $/oz $873 - - ~$850 $850-900

Mine-site AISC(1),(2) $/oz $1,093 - - ~$1,060 $1,125-1,175

Tonnes of ore processed tpd 7,912 7,861 7,899 7,500-8,000 8,000

Grade processed g/t Au 2.25 2.47 2.31 2.20-2.65 2.15-2.35

Average recovery rate % 92% 91% 91% 90-92% 90-92%

Sustaining capital(1) $ millions $31 - - $40-45 $50-55

Growth capital(1) $ millions $29 - - $25-30 $5-10

Total sustaining & growth

capital(1) (ex. exploration) $ millions $60 - - $65-75 $55-65

Capitalized exploration(1) $ millions $4 - - $7 $4

(1) Refer to the "Non-GAAP Measures and Additional GAAP" disclosure at the end of this press release and the Q3 2021 MD&A for a description

and calculation of these measures.

(2) For the purposes of calculating mine-site all-in sustaining costs at individual mine sites, the Company does not include an allocation of corporate

and administrative and share based compensation expenses to the mine sites.

(3) 2021 cost guidance was revised on October 27, 2021. Production guidance was unchanged

Gold production at Young-Davidson in 2022 is expected to be consistent with 2021, reflecting

similar grades and mining and processing rates. Following the completion of the lower mine

expansion in July 2020, underground mining rates increased to average a record 7,889 tpd in

2021, including a record 8,128 tpd in the second half of 2021. Mining and processing rates are

expected to average design rates of 8,000 tpd going forward.

Grades mined and processed are expected to range between 2.15 and 2.35 grams per tonne

of gold (“g/t Au”) in 2022 and remain at similar levels through 2024. Grades mined are

expected to increase thereafter, as YD West becomes more of a significant contributor to

production.

Total cash costs and mine-site AISC are expected to increase from 2021, primarily reflecting

industry-wide cost inflation, partially offset by operational improvements. Costs are expected

to remain at similar levels over the next three years.

Capital spending in 2022 (excluding exploration) is expected to range between $55 and $65

million, a decrease from 2021 with construction of the new life of mine tailings facility (“TIA 1”)

completed in the fourth quarter of 2021. Capital spending is expected to remain at similar

levels in 2023 and decrease slightly in 2024.

Young-Davidson is expected to generate record mine-site free cash flow of approximately

$100 million in 2021, driven by higher production, lower costs and lower capital with the

completion of the lower mine expansion. At a $1,750 per ounce gold price, the operation is

expected to generate similar mine-site free cash flow in 2022 and over the long term.

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7 | ALAMOS GOLD INC

Island Gold

Island Gold

Q3 YTD

2021 Q4 2021 2021A 2021 Revised

Guidance (3) 2022 Guidance

Gold production 000 oz 103 38 141 130 – 145 125 – 135

Total cash costs(1) $/oz $512 - - ~$525 $550-600

Mine-site AISC(1),(2) $/oz $860 - - ~$865 $850-900

Tonnes of ore processed tpd 1,174 1,247 1,193 1,200 1,200

Grade processed g/t Au 10.29 10.51 10.35 9.0-11.0 8.8-10.8

Average recovery rate % 96% 96% 96% 96-97% 96-97%

Sustaining capital(1) $ millions $36 - - $40-45 $35-40

Growth capital(1) & capital

advances $ millions $43 - - $80-85 $145-160

Total sustaining & growth

capital(1) (ex. exploration) $ millions $79 - - $120-130 $180-200

Capitalized exploration(1) $ millions $14 - - $20 $20

(1) Refer to the "Non-GAAP Measures and Additional GAAP" disclosure at the end of this press release and the Q3 2021 MD&A for a description

and calculation of these measures.

(2) For the purposes of calculating mine-site all-in sustaining costs at individual mine sites, the Company does not include an allocation of corporate

and administrative and share based compensation expenses to the mine sites.

(3) 2021 cost guidance was revised on October 27, 2021. Production guidance was unchanged

Gold production at Island Gold is expected to decrease slightly in 2022, reflecting lower

planned grades which is consistent with the Mineral Reserve grade and the Phase III

expansion study released in 2020 (“Phase III Study”). Mining and processing rates are

expected to be consistent with 2021 and average 1,200 tpd. As outlined in the Phase III

Study, grades mined are expected to decrease below the average Mineral Reserve grade in

2023 followed by an increase above the average Mineral Reserve grade in 2024 driving

production higher.

Total cash costs and mine-site AISC are expected to increase in 2022, reflecting slightly lower

grades and industry-wide cost inflation. Costs are also higher than outlined in the Phase III

Study, reflecting inflation and the stronger Canadian dollar. The study assumed a USD/CAD

foreign exchange rate of $0.75:1 compared to a rate of $0.80:1 assumed in the 2022 budget.

Costs are expected to increase slightly in 2023, followed by a decrease in 2024, reflecting

higher grades. A more substantial decrease is expected following the completion of the Phase

III expansion in 2025.

Capital spending at Island Gold (excluding exploration) is expected to be between $180 and

$200 million in 2022. As outlined in the study, construction activities and capital spending on

the Phase III expansion are expected to increase in 2022. Permitting for the expansion is

expected to be completed during the first half of the year. Shaft site surface works,

construction of the hoisting plant and preparation of the shaft sink will be a major focus with

the pre-sink of the shaft expected to start mid-2022. Consistent with the study, capital

spending is expected to decrease slightly in 2023 and 2024 before decreasing closer to

sustaining levels following the completion of the expansion in 2025.

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Mulatos District

Mulatos

Q3 YTD

2021 Q4 2021 2021A 2021 Revised

Guidance (3)

2022

Guidance H1 2022 H2 2022

Gold production 000 oz 98 23 121 135 – 145 130 – 145 45 – 50 85 – 95

Total cash costs(1) $/oz $913 - - ~$1,000 $1,225-1,275 ~$1,500 ~$1,125

Mine-site AISC(1),(2) $/oz $1,097 - - ~$1,235 $1,325-1,375 ~$1,675 ~$1,175

Tonnes of ore stacked -

Mulatos crusher tpd 19,500 19,100 19,400 21,000 17,000

Tonnes of ore stacked -

La Yaqui Grande tpd - 10,000

Grades stacked g/t Au 1.04 0.85 0.99 0.8-1.2 0.7-1.0

Combined recovery ratio % 55% 48% 54% 60% 65-70%

Sustaining capital(1) $ millions $15 - - $30-35 $5-10

Growth capital(1) & capital

advances $ millions $79 - - $95-100 $50-55

Total sustaining & growth

capital(1) (ex. exploration) $ millions $93 - - $125-135 $55-65

Capitalized exploration(1) $ millions $1 - - - -

(1) Refer to the "Non-GAAP Measures and Additional GAAP" disclosure at the end of this press release and the Q3 2021 MD&A for a description

and calculation of these measures.

(2) For the purposes of calculating mine-site all-in sustaining costs at individual mine sites, the Company does not include an allocation of corporate

and administrative and share based compensation expenses to the mine sites.

(3) 2021 guidance was revised on October 27, 2021.

Combined gold production from the Mulatos District (including La Yaqui Grande) is expected

to be between 130,000 and 145,000 ounces in 2022. This represents a 13% increase from

2021 (based on the mid-point of guidance) as the second half of 2021 was impacted by longer

than anticipated recovery times from stockpiled ore stacked in the latter part of the year. With

the Cerro Pelon deposit depleted during the fourth quarter of 2021, stockpiled ore will be a

more significant contributor to gold production during the first half of 2022.

Given the longer leach cycle and additional reagents required to process this ore, as well as

lower grades from the El Salto portion of the Mulatos pit early in the year, gold production is

expected to be lower during the first half of 2022 at significantly higher costs. With the start of

production from La Yaqui Grande in the third quarter and increasing grades from El Salto,

approximately 65% of 2022 production is expected in the second half of the year at

substantially lower costs.

Grades stacked are expected to range between 0.7 and 1.0 g/t Au and trend higher through

the year, reflecting the contribution of higher grade La Yaqui Grande ore in the second half of

the year.

Total cash costs and mine-site AISC are expected to be well above annual guidance during

the first half of 2022 and trend significantly lower during the second half of the year, driven by

low-cost production growth from La Yaqui Grande.

Gold production is expected to increase to a range of 160,000 to 175,000 ounces in 2023 with

costs decreasing significantly from 2022, driven by a full year of production from La Yaqui

Grande. La Yaqui Grande is expected to be the primary source of production in 2024 with

combined production in the range of 135,000 to 145,000 ounces and resulting in a further

improvement in costs.