ALMU
AELUMA (ALMU)
NASDAQ
$13.34-$0.07 (-0.52%)
Price as of Sep 11, 2026 7:33 PM EDT
  • $245.5M
    Market Cap
  • -13.15%
    1-Year Change
  • Semiconductors
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK, INC.
5.32%
973,235
+113,528 (+11.67%)
Jun 30, 2026
VANGUARD GROUP INC
4.68%
857,011
+418,045 (+48.78%)
Dec 31, 2025
D. E. SHAW & CO., INC.
4.36%
797,983
+772,983 (+96.87%)
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
3.14%
574,417
-14,334 (-2.50%)
Jun 30, 2026
MILLENNIUM MANAGEMENT LLC
2.89%
529,005
+130,706 (+24.71%)
Jun 30, 2026
GEODE CAPITAL MANAGEMENT, LLC
1.74%
318,018
+22,696 (+7.14%)
Jun 30, 2026
STATE STREET CORP
1.39%
254,168
+6,823 (+2.68%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions20.8M (70.81%)
  • Insiders4.7M (16.06%)
  • Mutual Funds3.8M (13.13%)
  • Other0 (0.00%)

Insider Transactions

  • 16.06% (4.7M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 3
    Number of InsiderSelling (last 12 months)
  • $1.5B
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Klamkin Jonathan
Chief Executive Officer
Gift
Aug 03, 2026
$0.00
20,000
$0.00
1.3M
Klamkin Jonathan
Chief Executive Officer
Gift
Aug 03, 2026
$0.00
20,000
$0.00
22,403
Klamkin Jonathan
Chief Executive Officer
Sell
Aug 03, 2026
$68,262.64
4,190
$16.29
18,213
Klamkin Jonathan
Chief Executive Officer
Sell
Aug 03, 2026
$266,377.95
15,810
$16.85
2,403
Klamkin Jonathan
Chief Executive Officer
Gift
Jul 01, 2026
$0.00
20,000
$0.00
1.3M
Klamkin Jonathan
Chief Executive Officer
Gift
Jul 01, 2026
$0.00
20,000
$0.00
22,403
Klamkin Jonathan
Chief Executive Officer
Sell
Jul 01, 2026
$419,511.90
19,900
$21.08
2,503
Klamkin Jonathan
Chief Executive Officer
Sell
Jul 01, 2026
$2,156.00
100
$21.56
2,403
Klamkin Jonathan
Chief Executive Officer
Sell
Mar 04, 2026
$501,350.37
28,206
$17.77
1.5M
Klamkin Jonathan
Chief Executive Officer
Sell
Mar 04, 2026
$401,249.33
21,794
$18.41
1.4M
Denbaars Steven
Sell
Feb 26, 2026
$198,093.75
12,500
$15.85
385,088
Denbaars Steven
Sell
Feb 25, 2026
$219,766.25
12,500
$17.58
397,588
Tompkins Mark N.
Sell
Feb 04, 2026
$417,598.72
28,544
$14.63
1.8M
Tompkins Mark N.
Sell
Feb 04, 2026
$90,054.72
5,956
$15.12
1.8M
Tompkins Mark N.
Sell
Jan 22, 2026
$524,135.90
29,038
$18.05
1.9M
Tompkins Mark N.
Sell
Jan 22, 2026
$18,095.22
962
$18.81
1.9M
Tompkins Mark N.
Sell
Jan 21, 2026
$561,674.56
30,328
$18.52
2.0M
Tompkins Mark N.
Sell
Jan 21, 2026
$249,877.10
12,947
$19.30
2.0M
Tompkins Mark N.
Sell
Jan 21, 2026
$35,054.60
1,715
$20.44
1.9M
Tompkins Mark N.
Sell
Jan 21, 2026
$212.40
10
$21.24
1.9M
Tompkins Mark N.
Sell
Jan 20, 2026
$601,453.92
29,112
$20.66
2.0M
Tompkins Mark N.
Sell
Jan 20, 2026
$19,163.04
888
$21.58
2.0M
Tompkins Mark N.
Sell
Dec 22, 2025
$519,050.00
35,000
$14.83
2.1M
Tompkins Mark N.
Sell
Dec 19, 2025
$441,000.00
30,000
$14.70
2.1M
Tompkins Mark N.
Sell
Dec 18, 2025
$287,400.00
20,000
$14.37
2.1M
Byron Michael
Award
Dec 03, 2025
$0.00
13,343
$0.00
13,343
ENSLEY CRAIG H
Award
Dec 03, 2025
$0.00
10,633
$0.00
27,300
Tompkins Mark N.
Sell
Oct 20, 2025
$614,625.00
37,500
$16.39
2.3M
Tompkins Mark N.
Sell
Oct 17, 2025
$558,512.00
33,344
$16.75
2.4M
Tompkins Mark N.
Sell
Oct 17, 2025
$105,074.01
5,913
$17.77
2.4M