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IMG.TO ·

Reports Fourth Quarter 2022 Production Results

Production Results

TSX:

IMG

NYSE:

IAG

NEWS RELEASE

IAMGOLD

REPORTS FOURTH QUARTER

2022 PRODUCTION RESULTS

All monetary amounts are expressed in U.S. dollars, unless otherwise indicated.

Toronto,

Ontario,

January

17,

2023

–

IAMGOLD

Corporation

(TSX:IMG,

NYSE:IAG)

(“IAMGOLD”

or

the

“Company”) today announced preliminary full year and fourth quarter

2022

operational results.

Highlights:

•

2022 attributable gold production

from consolidated operations

of

713,000 ounces

surpassing

the

top

end of

revised

production guidance

of 650,000 to 705,000 ounces

•

Cash

costs

1

and

All-

in

sustaining

costs

(“AISC”)

1

are

expected

to

be

near

the

bottom

end

of

the

updated guidance range of $1,100

to $1,130

per ounce sold

and

$1,600 to $1,650 per ounce sold,

respectively.

•

IAMGOLD to report

year-end

financial results on February 16, 2023 after market close

“IAMGOLD finished

the year

with a strong quarter, with production

surpassing

the top end of our updated guidance

estimates,

”

said

Maryse Bélanger,

Chair and Interim

President and Chief Executive Officer of IAMGOLD. “

Essakane

continued its strong performance producing a record 432,000 ounces

for the year, though supply constraints within

the country continue to

present

operational

challenges.

At IAMGOLD, the safety of all our employees is our number

one priority, and the Company continues to take proactive

measures to ensure the safety and security of in-country

personnel

and

is

constantly

adjusting

our

protocols

and

the

activity

levels

at

the

site

according

to

the

security

environment.

Rosebel reported its strongest quarter of the year

resulting from

accessing

higher grade

zones

Rosebel

and Saramacca

in line with the mine plan. We are proud of our accomplishments at Rosebel

and anticipate closing

of

the transaction with

Zijin

in the first quarter of 2023

.”

“Looking ahead,

we are fully focused on

operating safely and

bringing Côté Gold into

production. We remain on

track to commence production

at Côté

early next year.

We will be providing a Côté

update as well as operational

and financial

guidance

with

our year-end results

in February,

”

concluded Ms. Belanger.

In

2022, IAMGOLD achieved attributable gold production of

713,000 ounces,

above the

revised

guidance

range

of

650,000

to

705,000

ounces,

including

185,000

ounces

produced

in

the

fourth

quarter.

Annual

gold

sales

were

721,000 ounces on an attributable basis at an average realized gold price of

$1,742

per ounce. Fourth quarter gold

sales were 183,000 ounces on an attributable basis at an average realized gold price of $1,670

per ounce.

Essakane

Annual

attributable

gold

production

for

Essakane

was

432,000

ounces

(480,000

ounces

on

a

100%

basis),

exceeding the upper end of the updated guidance range of

410,000 to 430,000 ounces, as the mine

benefitted from

higher grades in the year. In the fourth quarter, attributable production was 98,000 ounces based on mill

throughput

of

2.8

million tonnes at a head grade of 1.35

grams per tonne gold (“g/t Au”) and gold recoveries of

89%. Mining

activities were lower in the quarter as a result of supply chain constraints

related to the security environment

in the

country while ensuring necessary stripping activities were

achieved

to secure access to ore planned for mining in

2023.

Westwood

Annual gold production for Westwood was

67,000 ounces,

within the

updated guidance

range

of

65,000 to

75,000

ounces.

In

the

fourth

quarter,

the

operations

produced

18,000

ounces.

Ore

production

and

underground

development continued to ramp up with 1,297 metres of lateral development achieved, an increase of 346 metres

Page | 2 of 5

compared to the previous quarter. Mill feed totaled 300,000 tonnes at a combined average head grade from the

underground and open pit of 1.94 g/t Au and average gold recoveries of 93% benefitting from ongoing mill

maintenance strategies for improved availability. The collective bargaining agreement with the Westwood union was

renewed in December.

Rosebel

Annual attributable gold production for Rosebel was 214,000 ounces (253,000 ounces on a 100% basis), above the

upper end of the updated guidance range of 175,000 to 200,000 ounces. In the fourth quarter, attributable production

was 69,000 ounces based on total mill feed of 2.1 million tonnes at an average head grade of 1. 29 g/t Au and

average recovery of 9 6%. Higher grades resulting from accessing higher grade zones at both Rosebel and

Saramacca as per the mine plan. On October 18, 2022, the Company announced the sale of its 95% interest in

Rosebel Gold Mines N.V. (inclusive of Rosebel and Saramacca) to Zijin Mining Group for cash consideration of $360

million. The closing of this transaction is on track to close in the first quarter of 2023.

Quarter ended December 31, 2022 Essakane Westwood Continuing

Operations Rosebel Consolidated

Gold produced, attributable* koz 98 18 116 69 185

Material mined kt 10,486 280 13,107

Waste mined kt 8,795 - 11,384

Ore mined kt 1,691 280 1,723

Mill feed kt 2,788 300 2,055

Mill feed grade g/t 1.35 1.94 1.29

Gold recovery % 89 93 96

Full year 2022 Essakane Westwood Continuing

Operations Rosebel Consolidated

Gold produced, attributable* koz 432 67 499 214 713

2022 guidance koz 410 – 430 65 – 75 475 – 505 175 – 200 650 – 705

Material mined kt 49,685 1,077 54,995

Waste mined kt 37,100 - 48,823

Ore mined kt 12,585 1,077 6,172

Mill feed kt 11,632 1,118 8,388

Mill feed grade g/t 1.44 1.99 1.00

Gold recovery % 89 93 94

Costs

The Company’s consolidated cash costs 1 and consolidated AISC1 for its three operating mines are expected to be

near the lower end of the 2022 updated guidance ranges of $1,1 00 and $1,130 per ounce sold and $1, 600 and

$1,650 per ounce sold, respectively.

Fourth Quarter and Full Year 2022 Financial Results

IAMGOLD will release its fourth quarter and full year 2022 financial results, including guidance for 2023 and a Côté

project update, after market hours on Thursday, February 16, 2023. Senior management will host a conference call

on Friday, February 17, 2023, at 8:30 a.m. (Eastern Time).

Listeners may access the conference call via webcast or through the following dial-in numbers:

Toll free (North America): 1 (800) 319-4610

International: +1 (604) 638-5340

Webcast: www.iamgold.com

Page | 3 of 5

An online archive of the webcast will be available by accessing the Company’s website at www.iamgold.com. A

telephone replay will be available for one month following the call by dialing toll free 1 (800) 319-6413 within North

America or +1 (604) 638-9010 from international locations and entering the passcode: 9791.

1 Certain non-GAAP financial measures, including cash costs, all-in sustaining cost ("AISC"), and sustaining and expansion capital

are included in this press release. Refer to “Non-GAAP Financial Measures” below.

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION

All information included in this news release, including any information as to the Company’s future financial or

operating performance, and other statements that express management’s expectations or estimates of future

performance, including statements in respect of the prospects and/or development of the Company’s projects, other

than statements of historical fact, constitutes forward-looking information or forward -looking statements, within the

meaning of applicable securities laws (collectively referred to herein as “forward -looking statements”) and such

forward-looking statements are based on expectations, estimates and projections as of the date of this news release.

Forward-looking statements are provided for the purpose of providing information about management’s current

expectations and plans relating to the future. Forward -looking statements are generally iden tifiable by, but are not

limited to, the use of the words “may”, “on track”, “will”, “should”, “continue”, “expect”, "budget", "forecast",

“anticipate”, “estimate”, “believe”, “intend”, “plan”, "schedule", “guidance”, “outlook”, “potential”, “seek”, “targe t”,

“strategy”, or “project” or the negative or other variations of these words or comparable terminology. Forward-looking

statements contained in this news release include, without limitation, statements with respect to: the Company’s

guidance for production at its operating mine sites, including estimated timing and amounts thereof; total cash costs;

all-in sustaining costs; the estimation of mineral reserves and mineral resources; the anticipated timing to complete

the proposed sale of the Rosebel gold mine; the realization of mineral reserve and mineral resource estimates;

estimated costs of production; es timated impairment charges; expected capital expenditures; the progress of

development at Côté Gold, including progress of project expenditures and contracting processes; and the timing for

commencement of commercial production at Côté Gold.

The Company cautions the reader that forward -looking statements are necessarily based upon a number of

estimates and assumptions that, while considered reasonable by management, are inherently subject to significant

business, financial, operational and other risks, uncertainties, contingencies and other factors, including those

described below, which could cause actual results, performance or achievements of the Company to be materially

different from results, performance or achievements expressed or implied by such forward-looking statements and,

as such, undue reliance must not be placed on them. Such risks, uncertainties, contingencies and other factors

include, but are not limited to: the Company's business strategies and its ability to execute thereon; the ability of the

Company to complete the proposed sale of the Rosebel gold mine and the anticipated timing thereof; the ability of

the Company to successfully complete construction of Cot é Gold and commence commercial production, and

anticipated timing thereof; the condition and results of the mining industry as a whole, and the gold mining industry

in particular; changes in the global prices for gold or other commodities (such as diesel and electricity); the ongoing

impact of COVID-19 and its variants on the Company and its workforce, the availability of labour and contractors,

key inputs for the Company and global supply chains; government actions taken in response to COVID-19, including

new variants of COVID -19, and any worsen ing thereof; legal, litigation, legislative, political or economic

developments in the jurisdictions in which the Company carries on business; the volatility of the Company's

securities; assessment of carrying values for the Company’s assets, including the ongoing potential for material

impairment and/or write-downs of such assets; title disputes; input in the management of certain of the Company's

assets by other companies or joint venture partners; the lack of availability of insurance covering all of the risks

associated with the Company’s operations; unexpected geological conditions; increasing competition and

consolidation in the mining sector; changes in tax laws, including mining tax regimes; the failure to obtain in a timely

manner from authorities key permits, authorizations or approvals necessary for exploration, development or

Page | 4 of 5

operations at the Company’s operations; the inability to participate in any gold price increase above the cap in any

collar transaction entered into in conjunction with a gold sale prepayment arrangement; the availability of necessary

capital and impacts on the Company’s liquidity levels; access to capital markets and financing; the Company's level

of indebtedness; the Company's ability to satisfy covenants under its credit facilities and other debt instruments;

changes in interest rates; adverse changes in the Company’s credit rating; the Company's choices in capital

allocation; effectiveness of the Company's ongoing cost containment efforts; the ability to execute on the Company's

de-risking activities and measures to improve operations; risks related to third -party contractors, including reduced

control over aspects of the Company's operations and/or the failure of contractors to perform as expected; risks

arising from holding derivative instruments; changes in U.S. dollar and other currency exchange rates, interest rates

or gold lease rates; capital and currency controls in foreign jurisdictions; the speculative nature of exploration and

development, including the risks of diminishing quantities or grades of reserves; the fact that reserves and resources,

expected metallurgical recoveries, capital and operating costs are estimates which may require revision; the

presence of unfavourable content in ore deposits, including clay and coarse gold; inaccuracies in life of mine plans;

failure to meet operational targets; geotechnical difficulties and major equipment failure; security risks, including civil

unrest, war or terrorism; information systems security threats and cybersecurity; laws and regulations governing the

protection of the environment; employee relations and labour disputes; the maintenance of tailings storage facilities

and the potential for a major spill or failure of the tailings facilities due to uncontrollable events, such as extreme and

unpredictable weather or seismic events; lack of reliable infrastructure, including access to roads, bridges, power

sources and water supplies; physical and regulatory risks related to climate change; attraction and retention of key

employees and other qualified personnel; availability and increasing costs associated with mining inputs and labour;

the availability of qualified contractors and the ability of contractors to timely complete projects on acceptable terms;

the relationship with the communities surrounding the Company's operations and projects; indigenous rights or

claims; illegal mining; and the inherent risks involved in the mining industry generally. Please s ee the Company’s

AIF or Form 40-F available on www.sedar.com or www.sec.gov/edgar.shtml for a comprehensive discussion of the

risks faced by the Company and which may cause actual results, performance or achievements of the Company to

be materially differe nt from results, performance or achievements expressed or implied by forward -looking

statements.

Although the Company has attempted to identify important factors that could cause actual results to differ materially

from those contained in forward -looking s tatements, there may be other factors that cause results not to be as

anticipated, estimated or intended. There can be no assurance that such statements will prove to be accurate, as

actual results and future events could differ materially from those anticipated in such statements.

The Company disclaims any intention or obligation to update or revise any forward -looking statements whether as

a result of new information, future events or otherwise except as required by applicable law.

NON-GAAP FINANCIAL MEASURES

This news release contains non-GAAP financial measures, including cash costs per ounce sold (“COC”), AISC per

ounce sold, sustaining and expansion capital expenditures, average realized gold price and available liquidity. The

Company believes that, in addi tion to conventional financial measures prepared in accordance with IFRS, certain

investors use these non -GAAP financial measures to assess the performance of the Company. These non -GAAP

financial measures do not have any standardized meaning prescribed by IFRS, may not be comparable to similar

measures presented by other companies and should not be considered in isolation or as a substitute for measures

of performance prepared in accordance with IFRS.

Page | 5 of 5

Cash costs include mine site operating costs such as mining, processing, administration, royalties, production taxes,

and realized derivative gains or losses, exclusive of depreciation, reclamation, capital expenditures and exploration

and evaluation costs. AISC include cost of sales exclusive of depreciation expense, sustaining capital expenditures,

which are required to maintain existing operations, capitalized exploration, sustaining lease principal payments,

environmental rehabilitation accretion and depreciation, by -product credits, and corporate general and

administrative costs. These costs are then divided by the Company’s attributable gold ounces sold by mine sites in

commercial production in the period to arrive at COC and AISC per ounce sold. The Company believes that the use

of COC and AISC per ounce sold metrics will assist analysts, investors and other stakeholders of the Company in

assessing its operating performance and its ability to generate free cash flow.

The Company presents its sustaining capital expenditures in its all -in sustaining costs to reflect the capital related

to producing and selling gold from its mine operations. The distinctions between sustaining and expansion capital

used by the Company align with the guidelines set out by the World Gold Council. Expansion capital is capital

expenditures incurred at new projects and capital expenditures related to major projects or expansion at existing

operations where these projects will materially benefit the operations. This non -GAAP financial measure provides

investors with transparency re garding the capital expenditures required to support the ongoing operations at its

mines, relative to its total capital expenditures.

About IAMGOLD

IAMGOLD is a n intermediate gold producer and developer based in Canada with three operating mines in North

America, South America and West Africa. The Company is building the large -scale, long life Côté Gold project in

Canada in partnership with Sumitomo Metals & Mining of Japan, which is expected to commence production in early

2024. IAMGOLD employs approximate ly 5,000 people and is committed to maintaining its culture of accountable

mining through high standards of Environmental, Social and Governance ("ESG") practices, including its

commitment to Zero Harm®, in every aspect of its business. IAMGOLD is listed o n the New York Stock Exchange

(NYSE:IAG) and the Toronto Stock Exchange (TSX:IMG) and is one of the companies on the Jantzi Social Index

(“JSI”), a socially screened market capitalization -weighted consisting of companies which pass a set of broadly

based environmental, social and governance rating criteria.

IAMGOLD Contact Information

Graeme Jennings, Vice President, Investor Relations

Tel: 416 360 4743 | Mobile: 416 388 6883

Toll-free: 1 888 464 9999

[email protected]

All material information on IAMGOLD can be found at www.sedar.com or at www.sec.gov.

Si vous désirez obtenir la version française de ce communiqué, veuillez consulter le www.iamgold.com/French/accueil/default.aspx.