Stocks · Utilities · Electric Services

DEEP FISSION, INC.

FISN Clue Score34
United States Fiscal year ends December CIK 0001918102
$4.45 -4.51% Close, 9 Oct 2026

Price, with every insider trade on it

Closing prices, 12 months · point at a dot for who traded, or at the line for the close
4.45 on 9 Oct 2026
15 10 4 Jun 2026 Aug 2026 Oct 2026 18 Jun 2026 $14.56 22 Jun 2026 $12.42 23 Jun 2026 $12.44 24 Jun 2026 $9.76 25 Jun 2026 $10.03 26 Jun 2026 $10.75 29 Jun 2026 $11.05 30 Jun 2026 $11.04 1 Jul 2026 $10.49 2 Jul 2026 $10.29 6 Jul 2026 $9.88 7 Jul 2026 $10.37 8 Jul 2026 $10.99 9 Jul 2026 $11.14 10 Jul 2026 $11.11 13 Jul 2026 $10.37 14 Jul 2026 $10.65 15 Jul 2026 $12.16 16 Jul 2026 $10.51 17 Jul 2026 $10.65 20 Jul 2026 $10.31 21 Jul 2026 $10.98 22 Jul 2026 $11.57 23 Jul 2026 $10.67 24 Jul 2026 $10.26 27 Jul 2026 $9.79 28 Jul 2026 $9.89 29 Jul 2026 $9.72 30 Jul 2026 $9.62 31 Jul 2026 $9.41 3 Aug 2026 $9.92 4 Aug 2026 $9.10 5 Aug 2026 $8.70 6 Aug 2026 $9.22 7 Aug 2026 $8.99 10 Aug 2026 $7.95 11 Aug 2026 $8.25 12 Aug 2026 $8.34 13 Aug 2026 $8.25 14 Aug 2026 $8.64 17 Aug 2026 $8.12 18 Aug 2026 $7.82 19 Aug 2026 $8.00 20 Aug 2026 $7.77 21 Aug 2026 $8.25 24 Aug 2026 $7.13 25 Aug 2026 $6.93 26 Aug 2026 $6.89 27 Aug 2026 $6.93 28 Aug 2026 $6.56 31 Aug 2026 $6.71 1 Sep 2026 $6.39 2 Sep 2026 $6.97 3 Sep 2026 $7.14 4 Sep 2026 $7.15 8 Sep 2026 $6.98 9 Sep 2026 $7.11 10 Sep 2026 $6.75 11 Sep 2026 $7.16 14 Sep 2026 $7.16 15 Sep 2026 $7.11 16 Sep 2026 $7.10 17 Sep 2026 $8.12 18 Sep 2026 $8.47 21 Sep 2026 $7.82 22 Sep 2026 $8.12 23 Sep 2026 $7.80 24 Sep 2026 $6.95 25 Sep 2026 $6.25 28 Sep 2026 $5.42 29 Sep 2026 $5.25 30 Sep 2026 $5.13 1 Oct 2026 $5.18 2 Oct 2026 $5.57 5 Oct 2026 $5.38 6 Oct 2026 $5.47 7 Oct 2026 $5.08 8 Oct 2026 $4.66 9 Oct 2026 $4.45
0 buys0 sales at will0 planned sales

Key numbers

Fiscal year 2025, ended 31 Dec 2025, as filed
Net income
$61.00M
Free cash flow
$13.09M
Return on equity
-273.7%
Return on capital
-75.8%

Revenue and profit

Fiscal years, as filed with the SEC · point at a year for the detail
Full statements →
0K -49K FY22 Fiscal year 2022 Revenue $0.00 Net income $49.41K Margin n/a 0K -48K FY23 Fiscal year 2023 Revenue $0.00 Net income $47.63K Margin n/a 0K -6M FY24 Fiscal year 2024 Revenue $0.00 Net income $5.71M Margin n/a 0K -61M FY25 Fiscal year 2025 Revenue $0.00 Net income $61.00M Margin n/a
RevenueNet incomeLoss

Latest insider transactions

From Form 4, most recent first
All of them →
DateInsiderTypeValueOf own stake
26 Aug 2025 Jacobs Ian Seth
President, CEO, CFO, Secretary
Bought $2.50 10.0%
26 Aug 2025 Tompkins Mark N.
Director
Sold at will $2.50 0.5%