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Aspen Aerogels (ASPN)
NYSE
$6.04+$0.14 (+2.39%)
Price as of Jun 23, 2026 7:16 PM EDT- $527.9MMarket Cap
- -2.80%1-Year Change
- Building Products & EquipmentIndustry
Aspen Aerogels (ASPN)
$6.04+$0.14 (+2.39%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
KIM, LLC | 14.82% | 12.3M | 0 (0.00%) | Mar 31, 2026 |
OAKTOP CAPITAL MANAGEMENT II, L.P. | 6.24% | 5.2M | +774,149 (+14.98%) | Mar 31, 2026 |
BLACKROCK FUNDING, INC. /DE | 6.03% | 5.0M | +336,880 (+6.74%) | Dec 31, 2024 |
BLACKROCK, INC. | 5.72% | 4.7M | -186,163 (-3.92%) | Mar 31, 2026 |
VANGUARD GROUP INC | 5.65% | 4.7M | +175,580 (+3.75%) | Dec 31, 2025 |
NEEDHAM INVESTMENT MANAGEMENT LLC | 5.45% | 4.5M | +167,075 (+3.70%) | Mar 31, 2026 |
BLACKROCK INC. | 5.42% | 4.5M | +429,479 (+9.56%) | Jun 30, 2024 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
NEEDHAM FUNDS INC | 5.11% | 4.2M | +162,075 (+3.83%) | Mar 31, 2026 |
INVESCO EXCHANGE-TRADED FUND TRUST | 4.82% | 4.0M | +2.7M (+67.26%) | Jan 31, 2026 |
VANGUARD INDEX FUNDS | 4.03% | 3.3M | +26,397 (+0.79%) | Mar 31, 2026 |
iSHARES TRUST | 3.00% | 2.5M | +19,263 (+0.78%) | Mar 31, 2026 |
Manager Directed Portfolios | 1.75% | 1.5M | 0 (0.00%) | Mar 31, 2026 |
AMERICAN CENTURY ETF TRUST | 1.36% | 1.1M | +196,398 (+17.41%) | Feb 28, 2026 |
COLUMBIA FUNDS SERIES TRUST I | 1.20% | 998,570 | +624,567 (+62.55%) | Jan 31, 2026 |
Current Ownership Distribution
- Institutions1.1B (79.99%)
- Mutual Funds253.0M (17.76%)
- Insiders32.1M (2.25%)
- Other0 (0.00%)
Insider Transactions
- 2.25% (32.1M)Current InsiderOwnership (%, shares)
- 0Number of InsiderBuying (last 12 months)
- $0.00Amount of InsiderBuying (last 12 months)
- 2Number of InsiderSelling (last 12 months)
- $1.6MAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
Whitaker Corby C Chief Commercial Officer | In Kind | Mar 08, 2026 | $6,195.28 | 1,924 | $3.22 | 205,315 |
Thoele Grant Douglas CFO & Treasurer | In Kind | Mar 08, 2026 | $1,899.80 | 590 | $3.22 | 77,732 |
Young Donald R President and CEO | In Kind | Mar 08, 2026 | $13,765.50 | 4,275 | $3.22 | 637,834 |
Landes Gregg Chief Operating Officer | In Kind | Mar 08, 2026 | $6,195.28 | 1,924 | $3.22 | 102,931 |
Young Donald R President and CEO | In Kind | Mar 05, 2026 | $28,180.86 | 8,618 | $3.27 | 642,109 |
Whitaker Corby C SVP, Sales and Marketing | In Kind | Mar 05, 2026 | $12,775.89 | 3,907 | $3.27 | 207,239 |
Landes Gregg SVP, Operations and Strat Deve | In Kind | Mar 05, 2026 | $12,471.78 | 3,814 | $3.27 | 104,855 |
Thoele Grant Douglas CFO & Treasurer | In Kind | Mar 05, 2026 | $7,743.36 | 2,368 | $3.27 | 78,322 |
Daniel Santhosh P Chief Accounting Officer | In Kind | Mar 05, 2026 | $3,224.22 | 986 | $3.27 | 15,330 |
Whitaker Corby C SVP, Sales and Marketing | Award | Mar 04, 2026 | $0.00 | 77,824 | $0.00 | 77,824 |
Whitaker Corby C SVP, Sales and Marketing | Award | Mar 04, 2026 | $0.00 | 57,462 | $0.00 | 211,146 |
Young Donald R President and CEO | Award | Mar 04, 2026 | $0.00 | 212,249 | $0.00 | 212,249 |
Young Donald R President and CEO | Award | Mar 04, 2026 | $0.00 | 156,716 | $0.00 | 650,727 |
Thoele Grant Douglas CFO & Treasurer | Award | Mar 04, 2026 | $0.00 | 74,893 | $0.00 | 74,893 |
Thoele Grant Douglas CFO & Treasurer | Award | Mar 04, 2026 | $0.00 | 55,298 | $0.00 | 80,690 |
DEEGAN GLENN E. CAO, GC & Corp Secretary | Award | Mar 04, 2026 | $0.00 | 75,171 | $0.00 | 75,171 |
DEEGAN GLENN E. CAO, GC & Corp Secretary | Award | Mar 04, 2026 | $0.00 | 55,503 | $0.00 | 67,176 |
Landes Gregg SVP, Operations and Strat Deve | Award | Mar 04, 2026 | $0.00 | 77,824 | $0.00 | 77,824 |
Landes Gregg SVP, Operations and Strat Deve | Award | Mar 04, 2026 | $0.00 | 57,462 | $0.00 | 108,669 |
Young Donald R President and CEO | Sell | Nov 13, 2025 | $183,609.35 | 56,845 | $3.23 | 494,011 |
Thoele Grant Douglas CFO & Treasurer | Award | Oct 01, 2025 | $0.00 | 14,563 | $0.00 | 14,563 |
Thoele Grant Douglas CFO & Treasurer | Award | Oct 01, 2025 | $0.00 | 20,547 | $0.00 | 20,547 |
Thoele Grant Douglas CFO & Treasurer | Award | Oct 01, 2025 | $0.00 | 10,273 | $0.00 | 14,881 |
DEEGAN GLENN E. CAO, GC & Corp Secretary | Award | Sep 30, 2025 | $0.00 | 16,416 | $0.00 | 16,416 |
DEEGAN GLENN E. CAO, GC & Corp Secretary | Award | Sep 30, 2025 | $0.00 | 23,347 | $0.00 | 23,347 |
DEEGAN GLENN E. CAO, GC & Corp Secretary | Award | Sep 30, 2025 | $0.00 | 11,673 | $0.00 | 11,673 |
Daniel Santhosh P Chief Accounting Officer | In Kind | Sep 13, 2025 | $10,300.17 | 1,563 | $6.59 | 16,316 |
Daniel Santhosh P Chief Accounting Officer | Sell | Aug 13, 2025 | $15,080.00 | 2,000 | $7.54 | 17,879 |
Daniel Santhosh P Chief Accounting Officer | Sell | Aug 12, 2025 | $32,237.10 | 4,410 | $7.31 | 19,879 |
Johnson Virginia CLO, GC, and Secretary | In Kind | May 23, 2025 | $39,164.31 | 6,129 | $6.39 | 44,450 |