Inclusion Criteria: Subjects must satisfy the following criteria to be enrolled in the study: 1. ≥ 18 years of age 2. Part A: - Subjects with histological or cytological confirmation of advanced unresectable solid tumors (including Grade 2 neuroendocrine neoplasms (NENs)/ neuroendocrine tumors (NETs), small cell lung cancer (SCLC), and other neuroendocrine carcinomas (NECs)) or R/R Non-Hodgkin's lymphomas (NHL) (diffuse large B cell lymphoma (DLBCL) and follicular lymphoma (FL) or marginal cell lymphoma MZL)) 3. Absolute neutrophil count (ANC) ≥ 1.5 x 109/L without growth factor support for 7 days (14 days if subject received pegfilgastrim) 4. Hemoglobin (Hgb) ≥ 10 g/dL (≥ 100 g/L or > 6.2 mmol/L) 5. Platelet Count - Platelet count (plt) ≥ 100 x 109/L (≥ 50 x 109/L for NHL subjects) or ≥ 75 x 109/L for HCC or NEHCC subjects with portal hypertension without transfusion for 7 days (Part A). - Platelet count (plt) ≥ 150 x 109/L (Part B, solid tumor cohort in particular NET and CRPC). - Platelet count (plt) ≥ 50 x 109/L (Part B, NHL cohort) 6. Part B: Neuroendocrine tumors: Subjects with histological or cytological confirmation of advanced unresectable solid tumors (including low/intermediate-grade lung NETs, and Prostrate NECs (NEPCs)) which fall under one of the following categories: B) Lung NETs: Subjects with demonstrated tumor progression in the last 12 months on last prior therapy assessed by CT/MRI scan in the following 2 histologies. i. Typical carcinoid (TC) ii. Atypical carcinoid (AC) C) Prostate NECs (NEPCs): 1. Appropriate pathological features according to WHO classification 2. Expression of neuroendocrine markers 3. Mitotic count ≥ 2 -10 per 10 HPF or ≥ 2-10 per 2mm2 and/or ≥ 3% Ki67 index (if reliably available) D) R/R NHL: Subjects with MZL, including histologic transformation of MZL relapsed/refractory after ≥2 prior therapies and ineligible for potentially curative therapy with the adequate immunohistochemistry markers. Subjects must have progressed on (or not been able to tolerate due to medical comorbidities or unacceptable toxicity), or following standard anticancer therapy or for whom no other approved conventional therapy exists or is acceptable Exclusion Criteria: The presence of any of the following will exclude a subject from enrollment: 1. low grade (G1) neuroendocrine tumors (<2 per high power fields (HPF) or < 2 per mm2 and/or ≤ 2% Ki67 index) such as carcinoid are excluded. 2. Subject has received anti-cancer therapy (either approved or investigational) ≤ 4 weeks or 5 half-lives, whichever is shorter, prior to Cycle 1 Day 1.. - < 42 days for prior nitrosureas or mitomycin C 3. Toxicities resulting from prior systemic cancer therapies must have resolved to ≤National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Grade 1 prior to starting CC-90011 treatment (with exception of grade 2 peripheral neuropathy and alopecia). 4. Prior autologous stem cell transplant ≤ 3 months before first dose or those who have not recovered. 5. Prior allogeneic stem cell transplant with either standard or reduced intensity conditioning. 6. Subject has undergone major surgery ≤ 4 weeks or minor surgery ≤ 2 weeks prior to Cycle 1 Day 1 or who have not recovered from surgery. 7. Subject has completed any radiation treatment < 4 weeks prior to Cycle 1 Day 1 or < 2 weeks for palliative bone radiotherapy (single fraction). Subjects with > 25% of myelopoetic BM radiation are not allowed to be enrolled on this study. 8. Subject has persistent diarrhea due to a malabsorptive syndrome (such as celiac sprue or inflammatory bowel disease) ≥ NCI CTCAE Grade 2, despite medical management), or any other significant GI disorder that could affect the absorption of CC-90011. 9. Subject with symptomatic or uncontrolled ulcers (gastric or duodenal), particularly those with a history of and/or risk of perforation and GI tract hemorrhages. 10. Subject with any hemorrhage/bleeding event > CTCAE Grade 2 or haemoptysis > 1 teaspoon within 4 weeks prior to the first dose 11. Symptomatic and untreated or unstable central nervous system (CNS) metastases as per protocol. 12. Subject with SCLC that has history of interstitial lung disease (ILD) OR a history of pneumonitis that has required oral or Intra Venous (IV) steroids 13. Subject has known symptomatic acute or chronic pancreatitis. 14. Subject has impaired cardiac function or clinically significant cardiac diseases, as per protocol. 15. Subject has other clinically significant heart disease such as congestive heart failure requiring treatment or uncontrolled hypertension (blood pressure ≥ 160/95 mm Hg). 16. Subject is a pregnant or nursing female. 17. Subject has known Human immunodeficiency virus (HIV) infection. 18. Subject has known chronic active hepatitis B or C virus (HBV, HCV) infection. 19. Subject with ongoing treatment with chronic, therapeutic dosing of anti-coagulants (eg, warfarin, low molecular weight heparin, Factor Xa inhibitors, thrombin antagonist). Low dose low molecular weight heparin for catheter maintenance and for short-term prophylaxis for subjects with prior PE and DVT are permitted under careful consideration by the Investigator. 20. Subject has a history of concurrent second cancers requiring active, ongoing systemic treatment. 21. Subject has any significant medical condition (eg, active or uncontrolled infection or renal disease), laboratory abnormality, or psychiatric illness that would prevent the subject from participating (or compromise compliance) in the study or would place the subject at unacceptable risk if he/she were to participate in the study. 22. Subjects with poor bone marrow reserve as assessed by Investigator such as in the following conditions of (Part B only): - Having received extensive bone radiotherapy - Having experienced several episodes of bone marrow aplasia in previous treatments - Confirmed histological bone marrow cancer infiltration - Requiring regular hematopoietic support (blood transfusion, erythropoietin, GCSF).) 23. Subject has any condition that confounds the ability to interpret data from the study.