'The Sperminator' Ari Nagel, 50, is retiring on Father's Day

New York Post

14-06-2025

Even the country's most prolific baby daddy believes in sperm limits.
Father of 176, Ari Nagel, better known as 'The Sperminator,' is retiring from baby-making, effective this Father's Day, he revealed to The Post.
The prolific papa – who spread his valuable seed to complete strangers for 17 years across 20 states, 10 countries and five continents – conceded that while he may feel invincible, his sperm is not.
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'It's best if they find someone younger – it's healthier. Better safe than sorry,' said Nagel, who turns 50 in August and recently began dating a 22-year-old he met at an art gallery.
His much younger beau doesn't want her own children – and after years of abstinence to accommodate women's ovulation schedules with the highest possible sperm count, Nagel said he is ready to get back in the saddle in a relationship.
5 Ari Nagel, known as 'The Sperminator,' told The Post he is retiring from baby-making.
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'She probably has daddy issues, so she wanted America's dad,' he joked.
The 6-foot-2, blue-eyed, CUNY Kingsborough math professor has five more bouncing bundles of joy due this year.
His main draw is that he has never charged a woman for his donations, enabling them to avoid sperm bank costs, which can run into the thousands of dollars, as well as all the associated red tape.
'My legacy will never be money or fame – it's family,' said Nagel. He helped scores of women – single, lesbian, those hitched to impotent hubbies – who thought motherhood was off the table.
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5 Nagel flanked by three of his kids, Elijah, Zoe and Aria, named in homage to her dad, wearing matching t-shirts. The kids are now 10.
Courtesy of Ari Nagel
And he's done the deed — or at least handed off fresh seed — in a dizzying array of places, from Starbucks bathrooms and Nets games to the Port Authority bus terminal and 'lots of airports.'
His first child, Ari Jr., was born in 2008 to a lesbian mom who posted an ad for a donor on Craigslist and wound up having sex with Nagel. 'We conceived the old fashioned way,' he said, adding that he tries to do the deed as 'quickly' as possible to reduce any lesbian's discomfort. 'I was many lesbians' first guy,' he said.
Many of his spawn carry part of his name, such as Ari, Aria, Aacari, Khari, Arianna, Aries and Ariel.
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'It's an untraditional modern family,' said Nagel, who grew up as the middle of seven children in an Orthodox Jewish home in upstate Monsey. 'But in the end, it's more than just biology – it's about being present, which is part of the reason I'm retiring,' said the overworked dad who has more birthdays, ball games and graduations than he can count.
'Being a father is more than just about biological material — it's about showing up.'
5 Nagel surrounded by multiple baby mamas on 'Maury' — the Maury Povich Show.
Courtesy of Ari Nagel
Nagel — who is currently separated from his first wife with whom shares three children — briefly married five women across the globe during his donation spree, and stressed that the unions were never romantic or conventional – but for religious, legal or cultural reasons.
And he's on the hook for child support for five different moms from his early donating days. He's on the hook for about half of his $100,000 annual salary, with the sums deducted from each paycheck.
Comparing himself to father of 14 Elon Musk, Nagel quipped, 'I feel richer than Elon musk, even if my bank account doesn't show it.'
Since The Post first broke the story of the hardest-working man in insemination in 2016 – following him into the bathroom of a downtown Brooklyn Target as he handed off his genetic material to a wannabe baby mama – Nagel has had his hands full.
5 Many of his spawn carry part of his name, such as Ari, Aria, Aacari, Khari, Arianna, Aries and Ariel.
Jack Forbes / NY Post Design
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At that point he had a relatively modest clan of 22 kids with 18 different women. Since then he battled with the Israel Supreme Court to legally donate, had his 50th child with an 18-year-old homeless baby mama, took a stint as a pitchman for a male fertility drug, and starred in a six-part web series for The Post.
He's even had a baby born in the clink in 2017 to a mom who was accused by her jilted lesbian ex of kidnapping their own daughter, who they shared with Nagel – so getting used to cradle bars wasn't a big adjustment.
5 Nagel — who is currently separated from his first wife with whom shares three children — briefly married five women across the globe during his donation spree.
Tamara Beckwith/NY Post
Retirement will pay dividends for his love life, since Nagel conceded that his biggest concession all these years is 'abstinence.'
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'If someone is ovulating tomorrow, and I'm ejaculating today, the sperm count declines,' explained Nagel, who kvetched he was 'basically abstaining all the time because you never know when they're going to ovulate.'
But throwing in the towel doesn't mean Nagel gets out of diaper duty.
'I have my hands full,' said Nagel. 'I never did this to see how many kids I can have. Every child added a new layer to my heart. Whatever I gave, I got it back in abundance.'