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The role and impact of ESG standards in mergers and acquisitions. Empirical analysis of stakeholders, synergies, and firm characteristics Cover

The role and impact of ESG standards in mergers and acquisitions. Empirical analysis of stakeholders, synergies, and firm characteristics

Open Access
|Dec 2025

Figures & Tables

Table 1

Importance of ESG for different stakeholders in M&A (H1).

Mean valueMedianModeStandard deviationMinimumMaximumSumCoefficient of variation (%)
Providers of equity capital4.00440.871584521.75
Firm image in media3.97440.801583820.10
Employees3.92440.831582721.10
Providers of debt capital3.91440.811582620.77
Suppliers3.89440.951582024.52
Clients3.78441.001579826.46

Notes: Statistical summary of responses to the question: “ESG standards are of great importance in mergers and acquisitions conducted by our organization due to their impact on…” N = 211.

Source: Own elaboration.

Table 2

Impact of ESG standards on benefits in M&A transactions (H2).

Mean valueMedianModeStandard deviationMinimumMaximumSumCoefficient of variation (%)
Attracting (or retaining) talent in the merged/acquired companies4.02440.831584820.60
Reducing costs of environmental compliance3.96440.772583619.55
High efficiency and quality of corporate governance during the integration phase of merged companies3.95440.802583420.18
Increasing innovation in merged companies3.91440.871582622.35
Identifying sources of value in merger and acquisition processes3.86440.771581420.05
The ability to achieve synergies in merger and acquisition processes3.85440.762581319.66
Improving operational efficiency in merged companies3.82440.692580718.12

Notes: Statistical summary of responses to the question: “ESG standards are of great importance for…” N = 211.

Source: Own elaboration.

Table 3

Importance of ESG factors across different M&A stages (H3).

Stage/aspect of the M&A processMean valueMedianModeStandard deviationMinimumMaximumSumCoefficient of variation (%)
Target selection3.87440.921581623.67
Negotiations3.73440.971578826.11
Due diligence3.89440.951582024.40
Valuation3.77440.901579623.79
Synergy estimation3.82440.841580521.96
Deal structuring3.79440.921580024.35
Financing3.47440.871573225.04
Integration planning3.85440.991581225.66
Finalizing the transaction3.73440.921578824.77
Integration3.83440.952580924.78

Notes: Statistical summary of responses to the question: “What is the importance of ESG factors in a specific stage/aspect of the M&A process?” N = 211.

Source: Own elaboration.

Table 4

Significance of ESG standards in M&A processes by target size and location (H4, H5).

Mean valueMedianModeStandard deviationMinimumMaximumSumCoefficient of variation (%)
Target size
Medium enterprises3.77440.761579620.13
Big enterprises3.75430.851579222.61
Small enterprises3.29340.961569429.03
Target location
Emerging markets4.15440.641587515.47
EU4.14440.711587417.15
CEE4.09440.801586219.56
Developed markets4.08440.651586116.00
Poland3.87440.751581719.33

Notes: Statistical summary of responses to the question: “ESG standards are of great importance in mergers and acquisitions conducted by our organization when the acquisition/merger involves…” N = 211.

Source: Own elaboration.

Table 5

Influence of firm size on ESG importance across M&A stages (H5, tested in relation to H3).

Stage/aspect of the M&A process p-values of testsIs there a difference?
Levene’s testANOVARobust tests of equality of means (Welch)Kruskal-WallisLevene’s test
Target selection<0.001<0.001<0.001<0.001<0.001Yes
Negotiations<0.0010.0010.0030.008<0.001Yes
Due diligence<0.001<0.001<0.001<0.001<0.001Yes
Valuation<0.001<0.001<0.001<0.001<0.001Yes
Synergy estimation<0.0010.0040.0090.057<0.001Yes
Deal structuring<0.001<0.001<0.001<0.001<0.001Yes
Financing<0.0010.0280.0370.118<0.001No
Integration planning<0.001<0.0010.0020.003<0.001Yes
Finalizing the transaction<0.0010.0020.0050.013<0.001Yes
Integration<0.0010.0050.0010.005<0.001Yes

Notes: Statistical summary of p-values from tests examining the influence of firm size on the importance of ESG factors across various stages of the M&A process. This analysis was conducted in relation to responses to the question: “What is the importance of ESG factors in a specific stage/aspect of the M&A process?” N = 211. Firm sizes: small enterprise (10–49 employees), medium enterprise (50–249 employees), large enterprise (250–999 employees), and very large enterprise (1,000 or more employees).

Source: Own elaboration.

Table 6

Mean importance of ESG factors across M&A stages by firm size (H5, tested in relation to H3).

SmallMediumBigVery big
27856930
Target selection3.33.74.14.2
Target selection3.33.64.04.0
Negotiations3.33.74.24.2
Due diligence3.23.64.14.0
Valuation3.43.74.04.0
Synergy estimation3.33.64.14.1
Deal structuring3.13.43.73.6
Financing3.33.74.14.1
Integration planning3.33.64.03.8
Finalizing the transaction3.33.84.13.9

Notes: Mean values of responses to the question: “What is the importance of ESG factors in a specific stage/aspect of the M&A process?” N = 211. Firm sizes: small enterprise (10–49 employees), medium enterprise (50–249 employees), large enterprise (250–999 employees), and very large enterprise (1,000 or more employees).

Source: Own elaboration.

Table 7

Influence of firm size on the importance of ESG benefits in M&A processes (H5, tested in relation to H2).

p-values of testsIs there a difference?
Levene’s testANOVARobust tests of equality of means (Welch)Kruskal-WallisLevene’s test
The ability to achieve synergies in merger and acquisition processes<0.0010.0030.001<0.001<0.001Yes
Identifying sources of value in merger and acquisition processes<0.0010.0220.0160.010<0.001Yes
Reducing costs of environmental compliance0.0180.0050.0050.0020.018Yes
High efficiency and quality of corporate governance during the integration phase of merged companies0.0110.0110.0120.0070.011Yes
Improving operational efficiency in merged companies<0.0010.0180.0170.007<0.001Yes
Increasing innovation in merged companies0.0050.1800.1380.1120.005No
Attracting (or retaining) talent in the merged/acquired companies0.0600.0150.0140.0080.060Yes

Notes: Statistical summary of p-values from tests examining the relationship between firm size and the importance of ESG standards for achieving various benefits in M&A transactions. Responses are based on the question: “ESG standards are of great importance for…” N = 211. Firm sizes: small, middle, big, and very big.

Source: Own elaboration.

Table 8

Mean importance of ESG standards for achieving benefits in M&A by firm size (H5, tested in relation to H2).

SmallMediumBigVery big
n 27856930
The ability to achieve synergies in merger and acquisition processes3.53.84.04.0
Identifying sources of value in merger and acquisition processes3.54.04.14.0
Reducing costs of environmental compliance3.53.94.14.1
High efficiency and quality of corporate governance during the integration phase of merged companies3.53.84.03.9
Improving operational efficiency in merged companies3.63.94.04.1
Increasing innovation in merged companies3.64.04.14.1
Attracting (or retaining) talent in the merged/acquired companies3.33.74.14.2
The ability to achieve synergies in merger and acquisition processes3.53.84.04.0

Notes: Mean values of responses to the question: “ESG standards are of great importance for…” N = 211. Firm sizes: small enterprise (10–49 employees), medium enterprise (50–249 employees), large enterprise (250–999 employees), and very large enterprise (1,000 or more employees).

Source: Own elaboration.

Table 9

Influence of acquirer ownership on ESG importance across M&A stages (H5, tested in relation to H3).

Stage/aspect of the M&A process p-values of testsIs there a difference?
Levene’s testANOVARobust tests of equality of means (Welch)Kruskal-WallisLevene’s test
Target selection0.1910.4190.0860.4370.191No
Negotiations0.0470.2310.0130.2260.047No
Due diligence0.1140.4700.1110.5000.114No
Valuation0.0200.5200.0460.4930.020No
Synergy estimation0.7610.3350.3530.1490.761No
Deal structuring0.0940.5740.6310.5180.094No
Financing0.8780.2730.3170.2610.878No
Integration planning0.1150.3890.0900.3780.115No
Finalizing the transaction0.1210.9960.9760.9930.121No
Integration0.3020.4480.4580.4390.302No

Notes: Statistical summary of p-values from tests examining the relationship between acquirer ownership (domestic or with some portion of foreign capital) and the importance of ESG factors across various stages of the M&A process. Responses are based on the question: “What is the importance of ESG factors in a specific stage/aspect of the M&A process?” N = 211. Firm ownership: domestic or with some portion of foreign capital.

Source: Own elaboration.

Table 10

Influence of acquirer ownership on the importance of ESG benefits in M&A processes (H5, tested in relation to H2).

p-values of testsIs there a difference?
Levene’s testANOVARobust tests of equality of means (Welch)Kruskal-WallisLevene’s test
The ability to achieve synergies in merger and acquisition processes0.4890.3580.4250.1480.489No
Identifying sources of value in merger and acquisition processes0.0900.7830.8400.5280.090No
Reducing costs of environmental compliance0.1350.6820.7140.4760.135No
High efficiency and quality of corporate governance during the integration phase of merged companies0.1310.6320.6490.5180.131No
Improving operational efficiency in merged companies0.2130.9260.9160.8960.213No
Increasing innovation in merged companies0.1950.6610.7240.3050.195No
Attracting (or retaining) talent in the merged/acquired companies0.0180.7730.8330.3900.018No

Notes: Statistical summary of p-values from tests examining the relationship between acquirer ownership (domestic or with some portion of foreign capital) and the importance of ESG standards for achieving various benefits in M&A transactions. Responses are based on the question: “ESG standards are of great importance for…” N = 211. Firm sizes: small, middle, big, and very big.

Source: Own elaboration.

DOI: https://doi.org/10.2478/ijme-2025-0024 | Journal eISSN: 2543-5361 (formerly 2299-9701) | Journal ISSN: 2299-9701
Language: English
Page range: 58 - 70
Submitted on: Nov 22, 2024
Accepted on: Nov 28, 2025
Published on: Dec 31, 2025
Published by: SGH Warsaw School of Economics
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2025 Mariusz-Jan Radło, Tomasz M. Napiórkowski, Justyna Zabawa, Ewa Łosiewicz-Dniestrzańska, published by SGH Warsaw School of Economics
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.