diff --git a/Filters/General/vtkSpatioTemporalHarmonicsAttribute.cxx b/Filters/General/vtkSpatioTemporalHarmonicsAttribute.cxx
index 4d4cb495371f48246884e2e407870537b429fa11..e4a63ef157dc7da7229ae03e3232a1480a803459 100644
--- a/Filters/General/vtkSpatioTemporalHarmonicsAttribute.cxx
+++ b/Filters/General/vtkSpatioTemporalHarmonicsAttribute.cxx
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright (c) Kitware Inc.
+// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
 // SPDX-License-Identifier: BSD-3-Clause
 #include "vtkSpatioTemporalHarmonicsAttribute.h"
 
diff --git a/Filters/General/vtkSpatioTemporalHarmonicsAttribute.h b/Filters/General/vtkSpatioTemporalHarmonicsAttribute.h
index 93bad9c5f5c55401fced3fc9885a540f91e75edd..aa763ebd1519ee0a1a459d8e7ee00196f7152559 100644
--- a/Filters/General/vtkSpatioTemporalHarmonicsAttribute.h
+++ b/Filters/General/vtkSpatioTemporalHarmonicsAttribute.h
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright (c) Kitware Inc.
+// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
 // SPDX-License-Identifier: BSD-3-Clause
 /**
  * @class   vtkSpatioTemporalHarmonicsAttribute
diff --git a/Filters/Sources/Testing/Cxx/TestSpatioTemporalHarmonicsSource.cxx b/Filters/Sources/Testing/Cxx/TestSpatioTemporalHarmonicsSource.cxx
index f8057967fca1cb2be358d36956697948c347b45c..9b654ae30a027320e4d42f94487284bd5e6d2718 100644
--- a/Filters/Sources/Testing/Cxx/TestSpatioTemporalHarmonicsSource.cxx
+++ b/Filters/Sources/Testing/Cxx/TestSpatioTemporalHarmonicsSource.cxx
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright (c) Kitware Inc.
+// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
 // SPDX-License-Identifier: BSD-3-Clause
 
 #include "vtkActor.h"
diff --git a/Filters/Sources/vtkSpatioTemporalHarmonicsSource.cxx b/Filters/Sources/vtkSpatioTemporalHarmonicsSource.cxx
index 645c08e08f9cbfa044e934fd5b1c996ff20427e9..2faa87ab43aefa4869446f4ad1cda7d455370a7d 100644
--- a/Filters/Sources/vtkSpatioTemporalHarmonicsSource.cxx
+++ b/Filters/Sources/vtkSpatioTemporalHarmonicsSource.cxx
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright (c) Kitware Inc.
+// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
 // SPDX-License-Identifier: BSD-3-Clause
 #include "vtkSpatioTemporalHarmonicsSource.h"
 
diff --git a/Filters/Sources/vtkSpatioTemporalHarmonicsSource.h b/Filters/Sources/vtkSpatioTemporalHarmonicsSource.h
index 8369e54986ba363c30ce87ef2bc48e29192405be..e52c21bea526f0b310f77652dde3bd787f2f92fd 100644
--- a/Filters/Sources/vtkSpatioTemporalHarmonicsSource.h
+++ b/Filters/Sources/vtkSpatioTemporalHarmonicsSource.h
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright (c) Kitware Inc.
+// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
 // SPDX-License-Identifier: BSD-3-Clause
 /**
  * @class   vtkSpatioTemporalHarmonicsSource