diff --git a/qiskit/primitives/base/base_estimator.py b/qiskit/primitives/base/base_estimator.py
index 214103047792..a80bd512f920 100644
--- a/qiskit/primitives/base/base_estimator.py
+++ b/qiskit/primitives/base/base_estimator.py
@@ -366,7 +366,7 @@ def precision(self, value: float | None):
     def run(self, pubs: Iterable[EstimatorPubLike]) -> Job:
         """Estimate expectation values for each provided pub (Primitive Unified Bloc).
 
-            pubs: An iterable of pub-like objects, such as tuples ``(circuit, observables)`` or 
+            pubs: An iterable of pub-like objects, such as tuples ``(circuit, observables)`` or
             ``(circuit, observables, parameter_values)``.
 
         Returns:
diff --git a/qiskit/primitives/containers/estimator_pub.py b/qiskit/primitives/containers/estimator_pub.py
index 4f05e0583de0..1f0f07293190 100644
--- a/qiskit/primitives/containers/estimator_pub.py
+++ b/qiskit/primitives/containers/estimator_pub.py
@@ -18,7 +18,6 @@
 from __future__ import annotations
 
 from typing import Tuple, Union
-from numbers import Number
 
 import numpy as np
 
@@ -31,7 +30,7 @@
 
 class EstimatorPub(ShapedMixin):
     """Primitive Unified Bloc for any Estimator primitive.
-    
+
     An estimator pub is essentially a triple ``(circuit, observables, parameter_values)``.
     """
 
@@ -52,6 +51,7 @@ def __init__(
             parameter_values: A bindings array, if the circuit is parametric.
             validate: Whether to validate arguments during initialization.
         """
+        super().__init__()
         self._circuit = circuit
         self._observables = observables
         self._parameter_values = parameter_values or BindingsArray()