Ali Al-Mazroei
Vorsitzender bei ENBD REIT (CEIC) PLC
Aktive Beziehungen
Name | Geschlecht | Alter | Unternehmensverbindungen | Zusammenarbeit |
---|---|---|---|---|
Fazal Rahim Abdul Rahim | M | - | - | |
Khalifa Al-Daboos | M | - |
National Bonds Corp. PJSC
National Bonds Corp. PJSC Other Consumer ServicesConsumer Services National Bonds Corporation PJSC engages in the provision of banking services. It offers direct wealth accumulation through an all-in-one compliant mudaraba based saving scheme. The company was founded in March 2006 and is headquartered in Dubai, the United Arab Emirates. | - |
Ala'a Eraiqat | M | - | 20 Jahre | |
Mohammed bin Faraj Ali Al-Kanani | M | - |
National Bonds Corp. PJSC
National Bonds Corp. PJSC Other Consumer ServicesConsumer Services National Bonds Corporation PJSC engages in the provision of banking services. It offers direct wealth accumulation through an all-in-one compliant mudaraba based saving scheme. The company was founded in March 2006 and is headquartered in Dubai, the United Arab Emirates. | - |
Salem Al-Shamsi | M | - | 16 Jahre | |
Maryam Al-Shorafa | F | - | 16 Jahre | |
Badreldin Elmogadam | M | - | 16 Jahre | |
Khalid Abdulkareem Ali Alfaheem | M | - | 5 Jahre | |
Khaled El-Marsafy | M | 54 |
Diwan Capital Ltd.
Diwan Capital Ltd. Investment Banks/BrokersFinance Diwan Capital Ltd. provides financial services. The company was founded on January 27, 2008 and is headquartered in Dubai, the United Arab Emirates. | - |
Abdullah Mohammed Al-Hosani | M | - | - | |
Faisal Aqil Mohamed Noor Al Bastaki | M | - | - | |
Esam Rashid Al-Mazroei | M | - |
Bahri & Mazroei Trading Co. LLC
Bahri & Mazroei Trading Co. LLC Miscellaneous Commercial ServicesCommercial Services Bahri & Mazroei Trading Co. LLC engages in the provision of infrastructure solutions, which include product supply and distribution of electrical and lighting solutions, as well as urban and water solutions. The company was founded by Salem Humaid Al-Bahri and Rashid Humaid Ali Al-Mazroei in 1968 and is headquartered in Dubai, United Arab Emirates. | - |
Muhammad Asif Siddique | M | - | 7 Jahre | |
Ibrahim Al Mansoori | M | - | - | |
Rasha Mortada | F | - | 18 Jahre | |
Chris Albano | M | - |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 24 Jahre |
Mohamed Ali Elgari | M | - | 6 Jahre | |
Mahmood Khaleel Ahmed Al Hashmi | M | - | - | |
Mohammed Ahmed Abdulla Al Hashimi | M | 41 | - | |
Majdi Darwish | M | - | 4 Jahre | |
Omar Al Nuaimi | M | - | 16 Jahre | |
Tuan Ahamath | M | - | - | |
Rana M. Saud Khalid | M | - | 11 Jahre | |
Rehab Lootah | F | 55 |
National Bonds Corp. PJSC
National Bonds Corp. PJSC Other Consumer ServicesConsumer Services National Bonds Corporation PJSC engages in the provision of banking services. It offers direct wealth accumulation through an all-in-one compliant mudaraba based saving scheme. The company was founded in March 2006 and is headquartered in Dubai, the United Arab Emirates. | - |
Hothaifa Alard | M | - | - | |
Mustafa Mohammed Al Khalfawi | M | - | 1 Jahre | |
Mark Edward Creasey | M | - | - | |
Huraiz bin Huraiz | M | - |
National Bonds Corp. PJSC
National Bonds Corp. PJSC Other Consumer ServicesConsumer Services National Bonds Corporation PJSC engages in the provision of banking services. It offers direct wealth accumulation through an all-in-one compliant mudaraba based saving scheme. The company was founded in March 2006 and is headquartered in Dubai, the United Arab Emirates. | - |
Harvey Kenneth Palmer | M | - |
Diwan Capital Ltd.
Diwan Capital Ltd. Investment Banks/BrokersFinance Diwan Capital Ltd. provides financial services. The company was founded on January 27, 2008 and is headquartered in Dubai, the United Arab Emirates. | - |
Rashid bin Humaid Rashid Al-Nuaimi | M | - | - | |
Richard Lyman Bushman | M | 65 |
Diwan Capital Ltd.
Diwan Capital Ltd. Investment Banks/BrokersFinance Diwan Capital Ltd. provides financial services. The company was founded on January 27, 2008 and is headquartered in Dubai, the United Arab Emirates. | - |
Abdulwahab Ahmed Abdulwahab Al-Naqib | M | - |
Diwan Capital Ltd.
Diwan Capital Ltd. Investment Banks/BrokersFinance Diwan Capital Ltd. provides financial services. The company was founded on January 27, 2008 and is headquartered in Dubai, the United Arab Emirates. | - |
Faisal Galadari | M | - | - | |
Buti Al-Ghandi | M | - |
Diwan Capital Ltd.
Diwan Capital Ltd. Investment Banks/BrokersFinance Diwan Capital Ltd. provides financial services. The company was founded on January 27, 2008 and is headquartered in Dubai, the United Arab Emirates. | - |
Yousif Al-Shubaily | M | 53 |
National Bonds Corp. PJSC
National Bonds Corp. PJSC Other Consumer ServicesConsumer Services National Bonds Corporation PJSC engages in the provision of banking services. It offers direct wealth accumulation through an all-in-one compliant mudaraba based saving scheme. The company was founded in March 2006 and is headquartered in Dubai, the United Arab Emirates. | 10 Jahre |
Jasem Al-Shamsi | M | 67 | - | |
Jamal bin Ghalaita | M | - |
National Bonds Corp. PJSC
National Bonds Corp. PJSC Other Consumer ServicesConsumer Services National Bonds Corporation PJSC engages in the provision of banking services. It offers direct wealth accumulation through an all-in-one compliant mudaraba based saving scheme. The company was founded in March 2006 and is headquartered in Dubai, the United Arab Emirates. | - |
Ammar bin Humaid Rashed Al-Nuaimi | M | - | - | |
Mohammad Daud Bakar | M | 60 | 6 Jahre | |
Evgeny Kovalishin | M | - |
Diwan Capital Ltd.
Diwan Capital Ltd. Investment Banks/BrokersFinance Diwan Capital Ltd. provides financial services. The company was founded on January 27, 2008 and is headquartered in Dubai, the United Arab Emirates. | - |
Mohammed Qattan | M | - | 6 Jahre | |
Mohammad Hassan Kaleem | M | - | - | |
Mohammed Al-Ali | M | - |
National Bonds Corp. PJSC
National Bonds Corp. PJSC Other Consumer ServicesConsumer Services National Bonds Corporation PJSC engages in the provision of banking services. It offers direct wealth accumulation through an all-in-one compliant mudaraba based saving scheme. The company was founded in March 2006 and is headquartered in Dubai, the United Arab Emirates. | - |
Hani Hussein | M | - |
National Bonds Corp. PJSC
National Bonds Corp. PJSC Other Consumer ServicesConsumer Services National Bonds Corporation PJSC engages in the provision of banking services. It offers direct wealth accumulation through an all-in-one compliant mudaraba based saving scheme. The company was founded in March 2006 and is headquartered in Dubai, the United Arab Emirates. | - |
Abdullah Belyoahah | M | - |
National Bonds Corp. PJSC
National Bonds Corp. PJSC Other Consumer ServicesConsumer Services National Bonds Corporation PJSC engages in the provision of banking services. It offers direct wealth accumulation through an all-in-one compliant mudaraba based saving scheme. The company was founded in March 2006 and is headquartered in Dubai, the United Arab Emirates. | 14 Jahre |
Osama Al-Dereai | M | - | 6 Jahre | |
Mohamed Al-Ulama | M | - |
National Bonds Corp. PJSC
National Bonds Corp. PJSC Other Consumer ServicesConsumer Services National Bonds Corporation PJSC engages in the provision of banking services. It offers direct wealth accumulation through an all-in-one compliant mudaraba based saving scheme. The company was founded in March 2006 and is headquartered in Dubai, the United Arab Emirates. | 10 Jahre |
Abdirizak Mohamed | M | - | 18 Jahre | |
Deepak Khullar | M | - | 16 Jahre | |
Muhammed Iqtadar | M | - | - |
Beziehungs-Chart
Beziehungen zu mehreren Unternehmen
Ehemalige Beziehungen
Name | Geschlecht | Alter | Unternehmensverbindungen | Zusammenarbeit |
---|---|---|---|---|
Motti Finkelstein | M | - |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 19 Jahre |
Majed Suwaidi | M | - |
American University of Dubai
Southern New Hampshire University
| 7 Jahre |
Simon Copleston | M | - | 12 Jahre | |
Mohamed Sultan Ghannoum Al-Hameli | M | - | - | |
Mohamed Darwish Mohamed Al-Khouri | M | - | - | |
Eissa Al-Suwaidi | M | 66 | - | |
Kevin Taylor | M | - | 13 Jahre | |
Sangeetha Krishnamoorthy | F | - |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 4 Jahre |
Mohamed Al-Dhaheri | M | 51 | 15 Jahre | |
Jean-Paul Pierre Villain | M | - | 9 Jahre | |
Deborah Hopkins | F | 69 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 2 Jahre |
Steven Freiberg | M | 67 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 5 Jahre |
María Cristina Vilá de Van Hoorde | M | 51 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 9 Jahre |
Micah Heavener | M | 48 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 13 Jahre |
Melvin Zhou | M | - |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 7 Jahre |
Victoria A. Hatfield | F | - |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 2 Jahre |
Carlos Palomares | M | 79 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 4 Jahre |
Ann Goodbody | F | - |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 32 Jahre |
Uno Immanivong | F | 46 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 7 Jahre |
Julio Santiago Figueroa | M | 52 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | - |
Maria Semedalas | F | 63 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 5 Jahre |
Agustinus Sumandar | M | 59 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 6 Jahre |
Carlos Alberto Boero Hughes | M | 58 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 6 Jahre |
Alejandro Estevez-Breton | M | - |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 2 Jahre |
Daina Belair | F | 68 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 15 Jahre |
Scott Brian Preston | M | - |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 4 Jahre |
T. McDonald | M | 62 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 11 Jahre |
Paul Kiley | M | - |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | - |
Dacio A. Pasarell-Colón | M | 74 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 16 Jahre |
Smith Banomyong | M | 51 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 2 Jahre |
John T. Danaher | M | 59 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 12 Jahre |
John B. Jones | M | 79 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 10 Jahre |
Christine Y. Homer | F | 57 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | - |
Bruce Fletcher | M | - |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 18 Jahre |
Janet Clarke | F | 71 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 3 Jahre |
John Joseph Eager | M | - |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 27 Jahre |
Raheel Zia | M | 53 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | - |
Larry D. Hall | M | 70 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 5 Jahre |
Carlton Klein | M | - |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 16 Jahre |
Vicente Cuna | M | 62 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 14 Jahre |
James L. Bailey | M | 78 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 28 Jahre |
Tao Huang | M | - |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 5 Jahre |
Reginald Chen | M | - |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | - |
Jorge Bermudez | M | 72 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 3 Jahre |
Luis Vicente Lacambra Segura | M | - |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 13 Jahre |
David L. Jones | M | - |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | - |
Bradley Irving Dietz | M | 70 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 10 Jahre |
William P. Stengel | M | 75 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 30 Jahre |
Muntaser Izzat Ahmad Abu Dawwas | M | 52 |
Citibank NA (New York)
Citibank NA (New York) Major BanksFinance Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY. | 5 Jahre |
Statistik
Land | Beziehungen | % des Gesamten |
---|---|---|
Vereinigte Arabische Emirate | 57 | 57,58% |
Vereinigte Staaten | 43 | 43,43% |
Alter der Beziehungen
Aktive
Vergangene
Herr
Frau
Aufsichtsräte
Führungskräfte
Ursprung der Beziehungen
- Börse
- Insiders
- Ali Al-Mazroei
- Persönliches Netzwerk