[BIP-910] Grant Permissions for New V3 Stable Pool and Weighted Pool Factories

PR with Payload

https://github.com/BalancerMaxis/multisig-ops/pull/2672

Summary

This proposal grants the necessary permissions for the newly deployed V3 pool factories across Mainnet, Arbitrum, Base, Avalanche, Plasma, HyperEVM, Optimism and Gnosis:

• 20260116-v3-stable-pool-v3 (StablePoolFactory)
• 20260115-v3-weighted-pool-v2 (WeightedPoolFactory)

Specifically, this BIP grants:

1. Omni Multisig (0x9ff471F9f98F42E5151C7855fD1b5aa906b1AF7e): amplification parameter management permissions on the new StablePoolFactory
2. Emergency subDAO: factory disable permissions on both the new StablePoolFactory and WeightedPoolFactory

Motivation

With the deployment of updated V3 pool factories (20260116-v3-stable-pool-v3 and 20260115-v3-weighted-pool-v2), the corresponding operational and emergency permissions need to be granted to ensure continuity of protocol operations.

Specification

Permissions to grant

Omni Multisig — 0x9ff471F9f98F42E5151C7855fD1b5aa906b1AF7e

From 20260116-v3-stable-pool-v3:

• StablePool.startAmplificationParameterUpdate
• StablePool.stopAmplificationParameterUpdate

Emergency subDAO

From 20260116-v3-stable-pool-v3:

• StablePoolFactory.disable

From 20260115-v3-weighted-pool-v2:

• WeightedPoolFactory.disable

Networks

Mainnet, Arbitrum, Base, Avalanche, Plasma, HyperEVM, Optimism and Gnosis.

Emergency permissions are granted to the respective Emergency subDAO multisigs on each network.

Technical Details

On Mainnet, Arbitrum, Base, Avalanche, Optimism and Gnosis, the DAO multisig is admin and will call grantRoles on the respective Authorizer, passing the relevant action IDs and the target account (Omni or Emergency subDAO safe).

On HyperEVM and Plasma, the Omni multisig is admin and will directly grant roles to itself and the Emergency subDAO safe via the Authorizer.

The action IDs for each network can be verified in the balancer-deployments action-ids directory.

Verification

• Deployment addresses: balancer-deployments address book
• Action IDs: balancer-deployments action-ids
• Emergency subDAO safes: Balancer docs — Emergency subDAO
• Payload builder: Permissions Payload Builder