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DEEP FISSION, INC.

FISN No buying or selling
CIK 0001918102 #3174 in the set updated 21 Sep 2026
Bought (12 mo)
$0.00
out of their own pocket, the only kind of buying there is
Sold (12 mo)
$0.00
$0.00 on a plan · $0.00 straight out of an exercise
Sold at will
$0.00
0 of 0 sales
Net
$0.00
$0.00 against sales at will

By person

5 insiders · 0 transactions

There is no salary here to measure against. DEEP FISSION, INC.'s chief executive is paid a token, so dividing a holding by it says nothing.

Which is why this company is in neither direction of the chief executive filter on the transactions page. A stake that cannot be expressed as a multiple is not the same thing as a small one.

Insider
Role
Bought
Sold
Net
Holding
Worth
Change
Muller Elizabeth
Chief Executive Officer
10,254,281
$1.03K
Muller Richard
Chief Technology Officer
5,196,426
$519.64
Tompkins Mark N.
See Remarks
1,891,667
$189.17
−60.2%
Jacobs Ian Seth
President, CEO, CFO, Secretary
275,000
$27.50
+10.0%
Schmitz William Mark
Chief Financial Officer
103,928
$10.39

No percentages here. This company's share count has moved by a factor of 11.8 over the window, from 5,000,000 to 58,905,938 shares. A split, a merger or a large issue changes what the company is, and a holding measured at one point in that run is not a fraction of it at another.

Nothing of that kind in this period.

What was left out

Form 4 filings counted 25
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 0
Sales at will 0
Transactions with no price 0
Shares from compensation/vesting 549,451
History held since 28 Aug 2025