Zak Slayback is a partner at 1517 Fund. He writes about various topics on a personal substack.
What Zak can write
Writes checks of$25K to $1M
Comes in atPre-seed, SeedCan lead the round
Ownership target5-7%, 7-10%At first check
Email the firm[email protected]The firm's own inbox for founders.
1517 Fund writes $25K to $1M checks, larger than 1% of firms in the atlas.
Bars: how many firms report each check band. Highlighted: 1517 Fund.Focus
venture capital
Also at 1517 Fund
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One email when Zak's firm raises a fund, adds a partner or shows new activity.
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Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.
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Who is Zak Slayback?
Zak Slayback is a partner at 1517 Fund. He writes about various topics on a personal substack.
How much does Zak Slayback invest?
Zak Slayback invests through 1517 Fund, which writes checks of $25K to $1M at pre-seed, seed.
How do I pitch Zak Slayback?
Email [email protected], the firm's inbox for founders, and name Zak in the subject. A warm intro from a founder 1517 Fund backed works better.
Last updated 2026-10-15. Is this you? Ask for a correction.