diff --git a/CUDADataFormats/HGCal/interface/HGCConstant.h b/CUDADataFormats/HGCal/interface/HGCConstant.h
new file mode 100644
index 0000000000000..bbcdb67fe487b
--- /dev/null
+++ b/CUDADataFormats/HGCal/interface/HGCConstant.h
@@ -0,0 +1,98 @@
+#ifndef CUDADATAFORMATS_HGCCONSTANT_H
+#define CUDADATAFORMATS_HGCCONSTANT_H 1
+
+#include <vector>
+
+class HGCConstantVectorData {
+ public:
+  std::vector<double> fCPerMIP;
+  std::vector<double> cce;
+  std::vector<double> noise_fC;
+  std::vector<double> rcorr;
+  std::vector<double> weights;
+  std::vector<int> waferTypeL;
+};
+
+class HGCeeUncalibratedRecHitConstantData {
+ public:
+  double hgcEE_keV2DIGI_;
+  double hgceeUncalib2GeV_;
+  double *hgcEE_fCPerMIP_;  
+  double *hgcEE_cce_;
+  double *hgcEE_noise_fC_;
+  double *rcorr_;
+  double *weights_;
+  int *waferTypeL_;
+  float xmin_;
+  float xmax_;
+  float aterm_;
+  float cterm_;
+  uint32_t rangeMatch_;
+  uint32_t rangeMask_;
+  bool hgcEE_isSiFE_;
+  int nbytes;
+  int ndelem;
+  int nfelem;
+  int nuelem;
+  int nielem;
+  int nbelem;
+  int s_hgcEE_fCPerMIP_;
+  int s_hgcEE_cce_;
+  int s_hgcEE_noise_fC_;
+  int s_rcorr_;
+  int s_weights_;
+  int s_waferTypeL_;
+};
+
+class HGChefUncalibratedRecHitConstantData {
+ public:
+  double hgcHEF_keV2DIGI_;
+  double hgchefUncalib2GeV_;
+  double *hgcHEF_fCPerMIP_;
+  double *hgcHEF_cce_;
+  double *hgcHEF_noise_fC_;
+  double *rcorr_;
+  double *weights_;
+  int *waferTypeL_;
+  float xmin_;
+  float xmax_;
+  float aterm_;
+  float cterm_;
+  uint32_t rangeMatch_;
+  uint32_t rangeMask_;
+  uint32_t fhOffset_;
+  bool hgcHEF_isSiFE_;
+  int nbytes;
+  int ndelem;
+  int nfelem;
+  int nuelem;
+  int nielem;
+  int nbelem;
+  int s_hgcHEF_fCPerMIP_;
+  int s_hgcHEF_cce_;
+  int s_hgcHEF_noise_fC_;
+  int s_rcorr_;
+  int s_weights_;
+  int s_waferTypeL_;
+};
+
+class HGChebUncalibratedRecHitConstantData {
+ public:
+  double hgcHEB_keV2DIGI_;
+  double hgchebUncalib2GeV_;
+  double hgcHEB_noise_MIP_;
+  double *weights_;
+  uint32_t rangeMatch_;
+  uint32_t rangeMask_;
+  uint32_t fhOffset_;
+  bool hgcHEB_isSiFE_;
+  int nbytes;
+  int ndelem;
+  int nfelem;
+  int nuelem;
+  int nielem;
+  int nbelem;
+  int s_weights_;
+};
+
+#endif //CUDADATAFORMATS_HGCCONSTANT_H
diff --git a/CUDADataFormats/HGCal/interface/HGCRecHitSoA.h b/CUDADataFormats/HGCal/interface/HGCRecHitSoA.h
new file mode 100644
index 0000000000000..f360ee8559e88
--- /dev/null
+++ b/CUDADataFormats/HGCal/interface/HGCRecHitSoA.h
@@ -0,0 +1,15 @@
+#ifndef CUDADATAFORMATS_HGCRECHITSOA_H
+#define CUDADATAFORMATS_HGCRECHITSOA_H 1
+
+class HGCRecHitSoA {
+ public:
+  float *energy;
+  float *time;
+  float *timeError;
+  uint32_t *id;
+  uint32_t *flagBits;
+  uint8_t *son;
+  int nbytes;
+};
+
+#endif //CUDADATAFORMATS_HGCRECHITSOA_H
diff --git a/CUDADataFormats/HGCal/interface/HGCUncalibratedRecHitSoA.h b/CUDADataFormats/HGCal/interface/HGCUncalibratedRecHitSoA.h
new file mode 100644
index 0000000000000..eb73f60f40099
--- /dev/null
+++ b/CUDADataFormats/HGCal/interface/HGCUncalibratedRecHitSoA.h
@@ -0,0 +1,18 @@
+#ifndef CUDADATAFORMATS_HGCUNCALIBRATEDRECHITSOA_H
+#define CUDADATAFORMATS_HGCUNCALIBRATEDRECHITSOA_H 1
+
+class HGCUncalibratedRecHitSoA {
+public:
+  float *amplitude;
+  float *pedestal;
+  float *jitter;
+  float *chi2;
+  float *OOTamplitude;
+  float *OOTchi2;
+  uint32_t *flags;
+  uint32_t *aux;
+  uint32_t *id;
+  int nbytes;
+};
+
+#endif //CUDADATAFORMATS_HGCUNCAIBRATEDRECHITSOA_H