diff --git a/oshmem/mca/spml/base/base.h b/oshmem/mca/spml/base/base.h
index 47b66bc15a5..7a34893c677 100644
--- a/oshmem/mca/spml/base/base.h
+++ b/oshmem/mca/spml/base/base.h
@@ -29,6 +29,15 @@
 
 BEGIN_C_DECLS
 
+/**
+ * Base team structure - common fields for all SPML team implementations
+ */
+struct mca_spml_base_team_t {
+    long *pSync;  /* Synchronization work array */
+    long *pWrk;   /* Reduction work array */
+};
+typedef struct mca_spml_base_team_t mca_spml_base_team_t;
+
 /*
  * This is the base priority for a SPML wrapper component
  * If there exists more than one then it is undefined
@@ -97,6 +106,20 @@ OSHMEM_DECLSPEC void mca_spml_base_memuse_hook(void *addr, size_t length);
 OSHMEM_DECLSPEC int mca_spml_base_put_all_nb(void *target, const void *source,
                                              size_t size, long *counter);
 
+/**
+ * Helper function to allocate and initialize a sync array using private_alloc
+ * @param count Number of long elements to allocate
+ * @param array Pointer to store the allocated array address
+ * @return OSHMEM_SUCCESS or OSHMEM_ERROR
+ */
+OSHMEM_DECLSPEC int mca_spml_base_alloc_sync_array(size_t count, long **array);
+
+/**
+ * Helper function to free a sync array using private_free
+ * @param array Pointer to the array pointer (will be set to NULL)
+ */
+OSHMEM_DECLSPEC void mca_spml_base_free_sync_array(long **array);
+
 /*
  * MCA framework
  */
diff --git a/oshmem/mca/spml/base/spml_base.c b/oshmem/mca/spml/base/spml_base.c
index 1362e07ecc5..e0c12522b11 100644
--- a/oshmem/mca/spml/base/spml_base.c
+++ b/oshmem/mca/spml/base/spml_base.c
@@ -16,6 +16,9 @@
 #include "opal/datatype/opal_convertor.h"
 #include "oshmem/proc/proc.h"
 #include "oshmem/mca/spml/base/base.h"
+#include "oshmem/mca/memheap/memheap.h"
+#include "oshmem/mca/memheap/base/base.h"
+#include "oshmem/include/shmem.h"
 #include "opal/mca/btl/btl.h"
 
 #define SPML_BASE_DO_CMP(_res, _addr, _op, _val) \
@@ -176,3 +179,24 @@ int mca_spml_base_put_all_nb(void *target, const void *source,
 {
     return OSHMEM_ERR_NOT_IMPLEMENTED;
 }
+
+/* Helper function to allocate and initialize a single sync array */
+int mca_spml_base_alloc_sync_array(size_t count, long **array)
+{
+    MCA_MEMHEAP_CALL(private_alloc(count * sizeof(long), (void **)array));
+    if (*array == NULL) {
+        SPML_ERROR("Failed to allocate sync array");
+        return OSHMEM_ERROR;
+    }
+    memset(*array, 0, count * sizeof(long));
+    return OSHMEM_SUCCESS;
+}
+
+/* Helper function to free a single sync array */
+void mca_spml_base_free_sync_array(long **array)
+{
+    if (*array != NULL) {
+        MCA_MEMHEAP_CALL(private_free(*array));
+        *array = NULL;
+    }
+}
diff --git a/oshmem/mca/spml/ucx/spml_ucx.c b/oshmem/mca/spml/ucx/spml_ucx.c
index 9fc1d965524..877c8c4cfa9 100644
--- a/oshmem/mca/spml/ucx/spml_ucx.c
+++ b/oshmem/mca/spml/ucx/spml_ucx.c
@@ -1870,9 +1870,25 @@ int mca_spml_ucx_team_split_strided(shmem_team_t parent_team, int start, int
 
     ucx_new_team->parent_team = (mca_spml_ucx_team_t*)parent_team;
 
-    *new_team = (shmem_team_t)ucx_new_team;
+    /* Allocate pSync array */
+    if (mca_spml_base_alloc_sync_array(SHMEM_SYNC_SIZE, &ucx_new_team->super.pSync) != OSHMEM_SUCCESS) {
+        goto cleanup_config;
+    }
+
+    /* Allocate pWrk array */
+    if (mca_spml_base_alloc_sync_array(SHMEM_REDUCE_MIN_WRKDATA_SIZE, &ucx_new_team->super.pWrk) != OSHMEM_SUCCESS) {
+        goto cleanup_psync;
+    }
 
+    *new_team = (shmem_team_t)ucx_new_team;
     return OSHMEM_SUCCESS;
+
+cleanup_psync:
+    mca_spml_base_free_sync_array(&ucx_new_team->super.pSync);
+cleanup_config:
+    free(ucx_new_team->config);
+    free(ucx_new_team);
+    return OSHMEM_ERROR;
 }
 
 int mca_spml_ucx_team_split_2d(shmem_team_t parent_team, int xrange, const
@@ -1923,6 +1939,10 @@ int mca_spml_ucx_team_destroy(shmem_team_t team)
 
     SPML_UCX_VALIDATE_TEAM(team);
 
+    /* Free pSync and pWrk using private_free */
+    mca_spml_base_free_sync_array(&ucx_team->super.pSync);
+    mca_spml_base_free_sync_array(&ucx_team->super.pWrk);
+
     free(ucx_team->config);
     free(team);
 
diff --git a/oshmem/mca/spml/ucx/spml_ucx.h b/oshmem/mca/spml/ucx/spml_ucx.h
index 0d1f345e925..9a75bf73f4b 100644
--- a/oshmem/mca/spml/ucx/spml_ucx.h
+++ b/oshmem/mca/spml/ucx/spml_ucx.h
@@ -130,6 +130,7 @@ typedef struct mca_spml_ucx_team_config {
 } mca_spml_ucx_team_config_t;
 
 typedef struct mca_spml_ucx_team {
+    mca_spml_base_team_t        super;
     int                         n_pes;
     int                         my_pe;
     int                         stride;
diff --git a/oshmem/runtime/oshmem_shmem_finalize.c b/oshmem/runtime/oshmem_shmem_finalize.c
index 1950e20fdd1..442dbdc0a03 100644
--- a/oshmem/runtime/oshmem_shmem_finalize.c
+++ b/oshmem/runtime/oshmem_shmem_finalize.c
@@ -90,9 +90,19 @@ int oshmem_shmem_finalize(void)
 static int _shmem_finalize(void)
 {
     int ret = OSHMEM_SUCCESS;
+    mca_spml_base_team_t *world_team, *shared_team;
 
     shmem_barrier_all();
 
+    /* Free pSync and pWrk for predefined teams */
+    world_team = (mca_spml_base_team_t *)oshmem_team_world;
+    shared_team = (mca_spml_base_team_t *)oshmem_team_shared;
+
+    mca_spml_base_free_sync_array(&world_team->pSync);
+    mca_spml_base_free_sync_array(&world_team->pWrk);
+    mca_spml_base_free_sync_array(&shared_team->pSync);
+    mca_spml_base_free_sync_array(&shared_team->pWrk);
+
     shmem_lock_finalize();
 
     /* Finalize preconnect framework */
diff --git a/oshmem/runtime/oshmem_shmem_init.c b/oshmem/runtime/oshmem_shmem_init.c
index 64af4e18f3e..a3ac8f69fd4 100644
--- a/oshmem/runtime/oshmem_shmem_init.c
+++ b/oshmem/runtime/oshmem_shmem_init.c
@@ -95,11 +95,54 @@ shmem_internal_mutex_t shmem_internal_mutex_alloc = {{0}};
 
 shmem_ctx_t oshmem_ctx_default = NULL;
 
-shmem_team_t oshmem_team_shared = NULL;
-shmem_team_t oshmem_team_world  = NULL;
+/* Predefined teams - statically allocated base team structures */
+mca_spml_base_team_t oshmem_team_world_instance = {.pSync = NULL, .pWrk = NULL};
+mca_spml_base_team_t oshmem_team_shared_instance = {.pSync = NULL, .pWrk = NULL};
+
+/* Pointers to predefined teams */
+shmem_team_t oshmem_team_world = (shmem_team_t)&oshmem_team_world_instance;
+shmem_team_t oshmem_team_shared = (shmem_team_t)&oshmem_team_shared_instance;
 
 static int _shmem_init(int argc, char **argv, int requested, int *provided);
 
+/* Helper function to allocate pSync and pWrk for predefined teams */
+static int world_and_shared_teams_alloc(void)
+{
+    int ret;
+
+    /* Allocate pSync for SHMEM_TEAM_WORLD */
+    ret = mca_spml_base_alloc_sync_array(SHMEM_SYNC_SIZE, &oshmem_team_world_instance.pSync);
+    if (OSHMEM_SUCCESS != ret) {
+        return ret;
+    }
+
+    /* Allocate pWrk for SHMEM_TEAM_WORLD */
+    ret = mca_spml_base_alloc_sync_array(SHMEM_REDUCE_MIN_WRKDATA_SIZE, &oshmem_team_world_instance.pWrk);
+    if (OSHMEM_SUCCESS != ret) {
+        mca_spml_base_free_sync_array(&oshmem_team_world_instance.pSync);
+        return ret;
+    }
+
+    /* Allocate pSync for SHMEM_TEAM_SHARED */
+    ret = mca_spml_base_alloc_sync_array(SHMEM_SYNC_SIZE, &oshmem_team_shared_instance.pSync);
+    if (OSHMEM_SUCCESS != ret) {
+        mca_spml_base_free_sync_array(&oshmem_team_world_instance.pWrk);
+        mca_spml_base_free_sync_array(&oshmem_team_world_instance.pSync);
+        return ret;
+    }
+
+    /* Allocate pWrk for SHMEM_TEAM_SHARED */
+    ret = mca_spml_base_alloc_sync_array(SHMEM_REDUCE_MIN_WRKDATA_SIZE, &oshmem_team_shared_instance.pWrk);
+    if (OSHMEM_SUCCESS != ret) {
+        mca_spml_base_free_sync_array(&oshmem_team_shared_instance.pSync);
+        mca_spml_base_free_sync_array(&oshmem_team_world_instance.pWrk);
+        mca_spml_base_free_sync_array(&oshmem_team_world_instance.pSync);
+        return ret;
+    }
+
+    return OSHMEM_SUCCESS;
+}
+
 #if OSHMEM_OPAL_THREAD_ENABLE
 static void* shmem_opal_thread(void* argc)
 {
@@ -403,6 +446,13 @@ static int _shmem_init(int argc, char **argv, int requested, int *provided)
 
     OPAL_TIMING_ENV_NEXT(timing, "mca_scoll_enable()");
 
+    /* Initialize pSync and pWrk for SHMEM_TEAM_WORLD and SHMEM_TEAM_SHARED teams */
+    if (OSHMEM_SUCCESS != (ret = world_and_shared_teams_alloc())) {
+        error = "Failed to allocate sync arrays for predefined teams";
+        goto error;
+    }
+    OPAL_TIMING_ENV_NEXT(timing, "world_and_shared_teams_alloc()");
+
     (*provided) = oshmem_mpi_thread_provided;
 
     oshmem_mpi_thread_multiple = (oshmem_mpi_thread_provided == SHMEM_THREAD_MULTIPLE) ? true : false;