IAMGOLD : Cote Gold Tour 2023 Presentation

Côté Gold: Site Tour

October 23rd, 2023

IAMGOLD's Côté Gold offices in Sudbury are located within the Robinson Huron Treaty area on the traditional lands of Atikameksheng Anishnawbek and Wahnapitae First Nation. Our Côté Gold Project is located on Treaty 9 Territory, on the traditional lands of Mattagami First Nation and Flying Post First Nation and the traditional harvesting area of the Métis Nation of Ontario, Region 3.

AANII . WELCOME . BIENVENUE

Côté Gold | An IAMGOLD mine

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Cautionary Statement

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION

All information included in this presentation, 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 presentation. Forward-looking statements are generally identifiable by the use of words such as "may", "will", "should", "continue", "expect", "budget", "aim", "can", "focus", "forecast", "anticipate", "estimate", "believe", "intend", "plan", "schedule", "guidance", "outlook", "potential", "seek", "targets", "cover", "strategy", "during", "ongoing", "subject to", "future", "objectives", "opportunities", "committed", "prospective", or "project" or the negative of these words or other variations on these words or comparable terminology. For example, forward-looking statements in this presentation include, without limitation, those under the headings "Outlook", "Quarterly Updates", "Exploration", "Liquidity and Capital Resources" and "Market Trends" and include, but are not limited to, statements with respect to: the estimation of mineral reserves and mineral resources and the realization of such estimates; operational and financial performance including the Company's guidance for and actual results of production, costs and capital and other expenditures such as exploration and including depreciation expense and effective tax rate; the expected costs and schedule to complete construction of the Côté Gold project; the updated life-of-mine plan, ramp up assumptions and other project metrics including operating costs in respect to the Côté Gold project; expected benefits from the operational improvements and de-risking strategies implemented or to be implemented by the Company; mine development activities; the Company's capital allocation; the composition of the Company's portfolio of assets including its operating mines, development and exploration projects; the completion of the sale of the Bambouk assets; permitting timelines and the expected receipt of permits; inflation and inflationary pressures; global supply chain constraints; the ability to secure alternative sources of consumables of comparable quality and on reasonable terms; workforce and contractor availability, labour costs and other labour impacts; the impacts of weather; the future price of gold and other commodities; foreign exchange rates and currency fluctuations; impairment assessments and assets carrying values estimates; safety and security concerns in the jurisdictions in which the Company operates and the impact thereof on the Company's operational and financial performance and financial condition; and government regulation of mining operations.

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. Forward-looking statements are also based on numerous material factors and assumptions, including as described in this presentation, including with respect to: the Company's present and future business strategies; operations performance within expected ranges; anticipated future production and cash flows; local and global economic conditions and the environment in which the Company will operate in the future; the price of precious metals, other minerals and key commodities; projected mineral grades; international exchanges rates; anticipated capital and operating costs; the availability and timing of required governmental and other approvals for the construction of the Company's projects.

Risks, uncertainties, contingencies and other factors that 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 include, without limitation: the ability of the Company to successfully complete the construction of Côté Gold and commence commercial production from the mine; the ability of the Company to complete the sales of the remaining Bambouk assets; the Company's business strategies and its ability to execute thereon; security risks, including civil unrest, war or terrorism and disruptions to the Company's supply chain as a result of such security risks, particularly in Burkina Faso and the Sahel region surrounding the Company's Essakane mine; the ongoing impacts of COVID-19 (and its variants) on the Company and its workforce; the availability of labour and qualified contractors; the availability of key inputs for the Company's operations and disruptions in global supply chains; the volatility of the Company's securities; litigation; contests over title to properties, particularly title to undeveloped properties; mine closure and rehabilitation risks; 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 a mining company's operations; unexpected geological conditions; competition and consolidation in the mining sector; the profitability of the Company being highly dependent on 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, and commodities used in the operation of the Company's business (such as diesel and electricity); legal, litigation, legislative, political or economic risks and new developments in the jurisdictions in which the Company carries on business; changes in taxes, including mining tax regimes; the failure to obtain in a timely manner from authorities key permits, authorizations or approvals necessary for exploration, development or operation, operating or technical difficulties in connection with mining or development activities, including geotechnical difficulties and major equipment failure; the inability of the Company to participate in any gold price increase above the cap in any collar transaction entered into in conjunction with certain gold sale prepayment arrangements; the availability of capital; the level of liquidity and capital resources; access to capital markets and financing; the Company's level of indebtedness; the Company's ability to satisfy covenants under its credit facilities; 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 Company's ability to execute on de-risking activities and measures to improve operations; availability of specific assets to meet contractual obligations; risks related to third-party contractors, including reduced control over aspects of the Company's operations and/or the failure and/or the effectiveness of contractors to perform; risks arising from holding derivative instruments; changes in U.S. dollar and other currency exchange rates or gold lease rates; capital and currency controls in foreign jurisdictions; assessment of carrying values for the Company's assets, including the ongoing potential for material impairment and/or write-downs of such assets; 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; equipment malfunctions; 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, lack of reliable infrastructure, including access to roads, bridges, power sources and water supplies; physical and regulatory risks related to climate change; unpredictable weather patterns and challenging weather conditions at mine sites; disruptions from weather related events resulting in limited or no productivity such as forest fires, flooding, heavy snowfall, poor air quality, and extreme heat or cold; attraction and retention of key employees and other qualified personnel; availability and increasing costs associated with mining inputs and labour, negotiations with respect to new, reasonable collective labour agreements may not be agreed to; 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; the potential direct or indirect operational impacts resulting from external factors, including infectious diseases, pandemics, or other public health emergencies; and the inherent risks involved in the exploration, development and mining business generally. Please see 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 different 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 statements, there may be other factors that cause results not to be as anticipated, estimated or intended. 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.

Côté Gold | An IAMGOLD mine

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Technical Information and Qualified Persons

QUALIFIED PERSON AND TECHNICAL INFORMATION

The technical and scientific information relating to exploration activities disclosed in this document was prepared under the supervision of and verified and reviewed by Craig MacDougall, P.Geo., Executive Vice President, Growth, IAMGOLD. Mr. MacDougall is a "qualified person" (a "QP") as defined by National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI 43-101").

Data verification involves data input and review by senior project geologists at site, scheduled weekly and monthly reporting to senior exploration management and the completion of project site visits by senior exploration management to review the status of ongoing project activities and data underlying reported results. All drilling results for exploration projects or supporting resource and reserve estimates referenced in this presentation have been previously reported in news release disclosures either by the Company or the project operator as the case may be (see referenced news releases) and have been prepared in accordance with NI 43-101. The sampling and assay data from drilling programs are monitored through the implementation of a quality assurance - quality control (QA-QC) program designed to follow industry best practice. Drill core (HQ and NQ size) samples are selected by the project geologists and sawn in half with a diamond saw at the project site. Half of the core is typically retained at the site for reference purposes. Generally, sample intervals are 1.0 to 1.5 metres in length and reverse circulation holes are sampled at 1.0 metre intervals at the drill rig. Samples are prepared and analyzed at site for the Company's producing mines and at accredited regional laboratories for the Company's exploration projects, using analysis techniques such as standard fire assay with a 50 gram charge; fire assay with gravimetric finish, or LeachWELL rapid cyanide leach with fire assay with a 50 gram charge.

Lisa Ragsdale, P.Geo (Director, Mining Geology, IAMGOLD Corporation), is the QP responsible for the review and approval of all mineral resource estimates contained herein, as at December 31, 2022. Guy Bourque, Eng. (Director, Mining, IAMGOLD Corporation), is the QP responsible for the review and approval of all mineral reserve estimates contained herein, as at December 31, 2022.

The technical information has been included herein with the consent and prior review of the above noted QPs, who have verified the data disclosed, and data underlying the information or opinions contained herein.

CAUTIONARY NOTE TO U.S. INVESTORS REGARDING DISCLOSURE OF MINERAL RESERVE AND MINERAL RESOURCE ESTIMATES

The mineral resource and reserve estimates contained in this presentation have been prepared in accordance with NI 43-101 and the Canadian Institute of Mining, Metallurgy and Petroleum ("CIM") - CIM Definition Standards on Mineral Resources and Mineral Reserves, adopted by the CIM Council, as amended (the "CIM Standards"). These standards are similar to those used by the United States Securities and Exchange Commission (the "SEC") Industry Guide No. 7, as interpreted by SEC staff ("Industry Guide 7"). However, the definitions in NI 43-101 and the CIM Standards differ in certain respects from those under Industry Guide 7. Accordingly, mineral resource and reserve information contained in this presentation may not be comparable to similar information disclosed by United States companies. Under Industry Guide 7, mineralization may not be classified as a "reserve" unless the determination has been made that the mineralization could be economically and legally produced or extracted at the time the reserve determination is made.

As a result of the adoption of amendments to the SEC's disclosure rules (the "SEC Modernization Rules"), which more closely align its disclosure requirements and policies for mining properties with current industry and global regulatory practices and standards, including NI 43-101 and the CIM Standards, and which became effective on February 25, 2019, the SEC now recognizes estimates of "measured mineral resources", "indicated mineral resources" and "inferred mineral resources." In addition, the SEC has amended definitions of "proven mineral reserves" and "probable mineral reserves" in its amended rules, with definitions that are substantially similar to those used in NI 43-101 and the CIM Standards. Issuers must begin to comply with the SEC Modernization Rules in their first fiscal year beginning on or after January 1, 2021, though Canadian issuers that report in the United States using the Multijurisdictional Disclosure System ("MJDS") may still use NI 43-101 rather than the SEC Modernization Rules when using the SEC's MJDS registration statement and annual report forms.

United States investors are cautioned that while the SEC now recognizes "measured mineral resources", "indicated mineral resources" and "inferred mineral resources" under the SEC Modernization Rules, investors should not assume that any part or all of the mineral deposits in these categories will ever be converted into a higher category of mineral resources or into mineral reserves. These terms have a great amount of uncertainty as to their economic and legal feasibility. Under Canadian regulations, estimates of inferred mineral resources may not form the basis of feasibility or pre-feasibility studies, except in limited circumstances.

Investors are cautioned not to assume that any "measured mineral resources", "indicated mineral resources", or "inferred mineral resources" that the Company reports in this presentation are or will be economically or legally mineable. Further, "inferred mineral resources" have a great amount of uncertainty as to their existence and as to their economic and legal feasibility. It cannot be assumed that any part or all of an inferred mineral resource will ever be upgraded to a higher category.

CAUTIONARY NON-GAAP PERFORMANCE MEASURES

This presentation contains non-GAAP financial measures, including average realized gold price per ounce sold, cash costs, cash costs per ounce sold, AISC, AISC per ounce sold, net cash from operating activities before changes in working capital, mine-site free cash flow, liquidity, net cash (debt), EBITDA, adjusted EBITDA, adjusted net earnings (loss) attributable to equity holders and adjusted net earnings (loss) per share attributable to equity holders, sustaining capital expenditures, expansion capital expenditures, and project expenditures. The non-GAAP financial measures disclosures included in the Company's Q2 2023 MD&A are incorporated by reference in this presentation.

Further details on these non-GAAP financial measures are included on pages 31 to 37 of the Company's Q2 2023 MD&A filed on SEDAR at www.sedar.com and on EDGAR at www.sec.gov.

Côté Gold | An IAMGOLD mine

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Côté Gold Tour Presentations

Evening Presentation	Presentation at Site
1.	Introduction	1. Growth & Exploration
2.	Project & Site Overview
3.	ESG
4.	Operational Excellence
5.	People
6.	Financial Performance
7.	Logistics for Tour

Côté Gold | An IAMGOLD mine

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IAMGOLD & Côté Gold Teams

Renaud Adams

President & CEO (since 2023)

Bruno Lemelin

COO

(since 2014)

Maarten Theunissen

CFO

(since 2021)

• 30+ years of experience in global mining experience in senior executive positions and mining operations located in the Americas
• New Gold, Richmont, Primero Mining, IAMGOLD
• Mining Engineer with a Master's and a Doctorate in Mineral Economics and extensive experience in operations, project development and engineering
• IAMGOLD, Glencore, SNC Lavalin
• Chartered Accountant with 15+ years of experience in the mining industry, including serving as Vice President, Finance of IAMGOLD
• IAMGOLD, KPMG

Eric Gosselin

Mine Manager (since 2022)

Kenny Cheong

Mine Technical Services Manager (since 2021)

Matthew Wilson

Gosselin Project Manager (since 2018)

• 15+ years of experience in open-pit

mining, including leadership in a large-scale mine

startup

• Kirkland Lake, Detour Gold

• Mining Engineer with an MBA with 19+ years of

experience

• Glencore - Nunavik and New Caledonia

• 19+ years of experience in engineering,

operations, project and management roles

• Underground and surface operations in gold and

base metals

Project Team

Jerzy Orzechowski

Executive Project Director (since 2022)

Luc-Bernard Denoncourt

Vice President, Project Development (since 2015)

• 40+ years of experience in project development, management, engineering, construction and strategic planning
• Nevsun, +One Mgmt Consultants, SNC Lavalin
• Project Manager overseeing various, including managing plant expansion projects at Rosebel and Project Management Office (PMO) at Essakane
• IAMGOLD, SNC Lavalin

Simon Beaulieu

Construction Manager (since 2018)

Simon Girard

Maintenance Manager (since 2011)

Werner Venter

Finance Manager

• 20+ years of experience in mining project

management and tailings management with a

focus on large projects

• IAMGOLD, SNC Lavalin, INCO

• Mechanical Engineer with 13+ years of experience

in engineering, maintenance, and general services

• IAMGOLD - Essakane, Westwood, and Côté Gold

• Accountant with 9+ years of experience in the

mining industry as Business Analyst, Chief

Financial Officer and Head of Finance roles

Operations Team

Bryan Wilson

Vice President & General Manager (since 2023)

Francis Letarte-Lavoie

Operations Manager (since 2020)

• 37+ years of experience in progressive management positions and operations
• Volunteered on multiple mining committees
• Impala, Xstrata, Glencore
• Metallurgical Engineer with 15+ years
  of experience. Commissioning of Côté Gold will be his fourth start-up in a row
• Nemaska Lithium, SEMAFO, Glencore

(since 2022)

Ben Stinson

Sustainability Manager (since 2022)

Ross Byron

Mill Manager (since 2023)

• Glencore, Vale Base Metals

• 25+ years of experience in the mining industry

• Bachelor of Environmental Studies, certified lead

auditor (OHSAS 18001) and CRST certification

• Newmont, Goldcorp, Glencore

• Mining Engineering Technologist with more than

30 years of experience in the underground, open

pit mining and milling industry

• NAP/Impala, Imerys

Côté Gold | An IAMGOLD mine

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Project & Site Overview

Côté Gold | An IAMGOLD mine

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Executive Summary

•

Ownership:

92.5% JV (60:40 IAG/SMM1); 7.5% 3rd party

•

Location:

Located 125 km southwest of Timmins, 175 km North of Sudbury

•

Acquisition:

April 2012 for enterprise value (net of cash) of $505M with total

resources of 0.9 Moz Indicated and 5.9 Moz Inferred2

•

Construction start:

September 2020

•

Power:

Grid power supplied by Hydro One - 115kV

•

Overall progress:

91% @ September 30, 2023

PROJECT OVERVIEW3

Life of mine:

18+ years (based on 7.2 Moz in reserves)

Mining rate (capacity):

65 Mtpa

Strip ratio:

2.4

Côté District - Mineral Reserves & Resources (2022)4

Processing rate (nameplate):

37,200 tpd

Category

Tonnes

Grade

Ounces

Avg. Grade:

0.96 g/t Au

(000's)

(g/t)

(Moz)

Average recovery rate

91.8%

Proven & Probable

233,000

0.96

7.17

Total recovered gold:

6.6 Moz Au

Côté

365,500

0.87

10.20

Average annual production:

365,000 oz/yr

Measured &

Gosselin

124,500

0.84

3.35

Average annual production (yr. 1-6):

495,000 oz/yr

Indicated3

(incl. of reserves)

Total

490,000

0.86

13.55

Total operating cost ($/t processed):

$19.56/t

Côté

189,600

0.63

3.82

Cash costs (avg. over LOM):

$699/oz

Inferred

Gosselin

72,900

0.73

1.71

AISC (avg. over LOM):

$851/oz

Total

262,500

0.66

5.53

Côté Gold | An IAMGOLD mine	1. Refer to news release on December 19, 2022. | 2. Refer to news release on April 27, 2012. |	3. Refer to 43-101 Technical Report on the Côté Gold Project filed	8
	August 12, 2022. | 4. M&I resources inclusive of mineral reserves. Refer to Mineral Reserves	& Mineral Resources and Cautionary Statements.

Côté Gold: Large-Scale and Long-Life Mine

Top 10 Gold Mines in Canada by Production1

(koz)

20

20

18

5

10

22

7

10

6

10

9

690

585

Remaining life of mine (years)2

Mines acquired in last 10 years

		4953
			420
				365	339
					300
						286	280	272
							240
Detour Lake	Malartic	Côté Gold	Meadowbank	Meliadine	Blackwater	Porcupine	Brucejack	Eleonore	La Ronde	Rainy River

	Acquired 2014:
Acquired 2019:	C$3.5B	Acquired 2021:
C$4.9B	Acquired 50% in 2022:	$2.8B
	C$2.6B4

Côté Gold | An IAMGOLD mine	production. | 3. Production expected to start in Q1 2024, production at 100% on years 1-6 average based on Côté August 12, 2022 NI 43-101 Technical Report. | 4. Analyst consensus	9
	1. Based on 2023E production guidance. | 2. Mine life as per stated mine life per company disclosure or technical reports where available, otherwise calculated as reserves divided by 2023E

estimates for Malartic portion of transaction.

Site Layout

I

A

B

H

CB

A - Côté Pit	D
B - Stockpiles
C - Primary & Secondary Crushing	E
D - Coarse Ore Dome
E - Processing Plant
F - Offices and Main Control Rooms	F
G - Tailings Management Facility
H - Truck Shop

I - Camp Accommodations	G

Côté Gold | An IAMGOLD mine

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