Astrotech (ASTC)
Astrotech on one page: short interest, daily short volume, fails to deliver, large holders, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as laboratory analytical instruments.
62K
Short interest
settlement 2026-10-15
1.9
Days to cover
-0.5 days vs prior
65.4%
Short share of volume
2026-11-03
22
Fails to deliver
settlement 2026-10-02
Thu 12 Nov
Next earnings
estimated date
$0
Insider flow, 90 days
0 buys, 0 sells
As of 2026-11-03.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in ASTC is 61,524 shares, down 40,329 shares over the last month. Over the last 48 readings it ranged from 1,064 shares (14 February 2025) to 1,007,150 shares (29 May 2026). The latest reading sits at the bottom of that range. At the reported average volume of 33K shares a day that is 1.9 days to cover.
Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/astc" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 61,524 | -30.3% | 32,926 | 1.87 |
| 2026-09-30 | 88,319 | -13.3% | 37,982 | 2.33 |
| 2026-09-15 | 101,853 | +30.0% | 29,214 | 3.49 |
| 2026-08-31 | 78,350 | -29.2% | 53,222 | 1.47 |
| 2026-08-14 | 110,734 | +119.7% | 570,653 | 1.00 |
| 2026-07-31 | 50,402 | -43.9% | 66,071 | 1.00 |
| 2026-07-15 | 89,847 | -43.1% | 149,729 | 1.00 |
| 2026-06-30 | 157,846 | +19.6% | 472,595 | 1.00 |
| 2026-06-15 | 131,925 | -86.9% | 2,914,010 | 1.00 |
| 2026-05-29 | 1,007,150 | +2336.3% | 24,372,121 | 1.00 |
| 2026-05-15 | 41,339 | -45.6% | 33,882 | 1.22 |
| 2026-04-30 | 75,943 | +95.2% | 129,737 | 1.00 |
| 2026-04-15 | 38,911 | -96.0% | 594,830 | 1.00 |
| 2026-03-31 | 960,143 | +3232.9% | 9,808,634 | 1.00 |
| 2026-03-13 | 28,808 | -2.4% | 6,572 | 4.38 |
| 2026-02-27 | 29,521 | +30.4% | 7,455 | 3.96 |
| 2026-02-13 | 22,640 | -3.1% | 9,885 | 2.29 |
| 2026-01-30 | 23,358 | -9.8% | 11,154 | 2.09 |
| 2026-01-15 | 25,894 | -36.8% | 15,157 | 1.71 |
| 2025-12-31 | 40,960 | -65.5% | 34,610 | 1.18 |
| 2025-12-15 | 118,829 | +503.0% | 219,594 | 1.00 |
| 2025-11-28 | 19,705 | -36.9% | 20,781 | 1.00 |
| 2025-11-14 | 31,247 | -2.9% | 12,878 | 2.43 |
| 2025-10-31 | 32,176 | -43.3% | 27,968 | 1.15 |
| 2025-10-15 | 56,718 | +865.4% | 2,890,678 | 1.00 |
| 2025-09-30 | 5,875 | -24.5% | 14,509 | 1.00 |
| 2025-09-15 | 7,778 | +42.7% | 7,580 | 1.03 |
| 2025-08-29 | 5,450 | +99.6% | 5,468 | 1.00 |
| 2025-08-15 | 2,730 | -14.8% | 4,217 | 1.00 |
| 2025-07-31 | 3,204 | +115.8% | 3,769 | 1.00 |
| 2025-07-15 | 1,485 | -40.1% | 2,726 | 1.00 |
| 2025-06-30 | 2,478 | -53.2% | 13,613 | 1.00 |
| 2025-06-13 | 5,293 | +205.8% | 3,366 | 1.57 |
| 2025-05-30 | 1,731 | +54.0% | 2,034 | 1.00 |
| 2025-05-15 | 1,124 | -15.0% | 3,808 | 1.00 |
| 2025-04-30 | 1,322 | -36.3% | 1,536 | 1.00 |
| 2025-04-15 | 2,076 | +0.7% | 4,175 | 1.00 |
| 2025-03-31 | 2,061 | +9.6% | 2,172 | 1.00 |
| 2025-03-14 | 1,881 | -29.3% | 2,065 | 1.00 |
| 2025-02-28 | 2,659 | +149.9% | 2,977 | 1.00 |
| 2025-02-14 | 1,064 | -51.0% | 6,161 | 1.00 |
| 2025-01-31 | 2,169 | -18.8% | 5,061 | 1.00 |
| 2025-01-15 | 2,670 | +2.9% | 6,776 | 1.00 |
| 2024-12-31 | 2,595 | -75.5% | 38,875 | 1.00 |
| 2024-12-13 | 10,569 | +243.8% | 34,539 | 1.00 |
| 2024-11-29 | 3,074 | -36.4% | 24,834 | 1.00 |
| 2024-11-15 | 4,832 | -4.6% | 15,892 | 1.00 |
| 2024-10-31 | 5,065 | -46.5% | 15,351 | 1.00 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 3 November 2026, the short share of ASTC volume is 65.4%, up 26.2 points over the last five sessions. Over the last 30 readings it ranged from 20.2% (28 October 2026) to 72.9% (14 October 2026). The latest reading is 13.1 points above the 30-session average of 52.3%, on 9K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-03 | 6K | 9K | 65.4% | 5 |
| 2026-11-02 | 7K | 16K | 45.8% | 0 |
| 2026-10-30 | 3K | 7K | 42.1% | 0 |
| 2026-10-29 | 2K | 4K | 45.8% | 0 |
| 2026-10-28 | 5K | 27K | 20.2% | 0 |
| 2026-10-27 | 4K | 11K | 39.1% | 0 |
| 2026-10-26 | 3K | 5K | 63.4% | 0 |
| 2026-10-23 | 3K | 6K | 59.9% | 4 |
| 2026-10-22 | 5K | 7K | 67.7% | 1 |
| 2026-10-21 | 15K | 24K | 61.7% | 627 |
| 2026-10-20 | 6K | 25K | 24.9% | 0 |
| 2026-10-19 | 6K | 12K | 48.4% | 828 |
| 2026-10-16 | 15K | 23K | 63.7% | 989 |
| 2026-10-15 | 30K | 56K | 53.8% | 5,315 |
| 2026-10-14 | 14K | 20K | 72.9% | 0 |
| 2026-10-13 | 8K | 13K | 64.0% | 0 |
| 2026-10-12 | 6K | 10K | 63.0% | 0 |
| 2026-10-09 | 3K | 6K | 45.2% | 0 |
| 2026-10-08 | 6K | 11K | 56.3% | 0 |
| 2026-10-07 | 7K | 10K | 65.1% | 0 |
| 2026-10-06 | 12K | 17K | 70.9% | 0 |
| 2026-10-05 | 5K | 11K | 47.6% | 0 |
| 2026-10-02 | 4K | 12K | 35.6% | 0 |
| 2026-10-01 | 4K | 10K | 45.7% | 0 |
| 2026-09-30 | 8K | 19K | 43.0% | 262 |
| 2026-09-29 | 5K | 10K | 53.6% | 222 |
| 2026-09-28 | 16K | 31K | 51.7% | 0 |
| 2026-09-25 | 3K | 6K | 43.7% | 0 |
| 2026-09-24 | 5K | 13K | 36.5% | 0 |
| 2026-09-23 | 21K | 29K | 71.2% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 2 October 2026, the fails-to-deliver balance in ASTC is 22 shares, down 2,431 shares over the last settlement date. Over the last 30 readings it ranged from 22 shares (31 August 2026) to 15,420 shares (6 August 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-02 | 22 | $7.43 | $163 |
| 2026-09-30 | 2,453 | $7.53 | $18K |
| 2026-09-29 | 1,297 | $7.64 | $10K |
| 2026-09-28 | 264 | $7.16 | $2K |
| 2026-09-23 | 891 | $6.96 | $6K |
| 2026-09-16 | 362 | $6.48 | $2K |
| 2026-09-15 | 2,147 | $6.55 | $14K |
| 2026-09-14 | 579 | $7.12 | $4K |
| 2026-09-09 | 1,199 | $7.60 | $9K |
| 2026-09-08 | 1,652 | $7.37 | $12K |
| 2026-09-04 | 3,566 | $7.18 | $26K |
| 2026-09-03 | 61 | $7.09 | $432 |
| 2026-09-02 | 982 | $6.96 | $7K |
| 2026-08-31 | 22 | $7.15 | $157 |
| 2026-08-28 | 762 | $7.12 | $5K |
| 2026-08-27 | 805 | $6.93 | $6K |
| 2026-08-18 | 1,538 | $8.16 | $13K |
| 2026-08-17 | 978 | $8.41 | $8K |
| 2026-08-12 | 617 | $9.40 | $6K |
| 2026-08-11 | 7,355 | $9.75 | $72K |
| 2026-08-07 | 6,230 | $9.01 | $56K |
| 2026-08-06 | 15,420 | $9.11 | $140K |
| 2026-08-05 | 729 | $7.24 | $5K |
| 2026-08-04 | 901 | $6.78 | $6K |
| 2026-08-03 | 69 | $6.54 | $451 |
| 2026-07-31 | 66 | $6.27 | $414 |
| 2026-07-29 | 943 | $6.41 | $6K |
| 2026-07-28 | 1,657 | $7.58 | $13K |
| 2026-07-27 | 3,171 | $7.20 | $23K |
| 2026-07-24 | 206 | $7.56 | $2K |
Insider trades
SEC Form 4, newest first. JSONNo open-market insider trades were reported for ASTC in the last 90 days. The most recent filings are listed below. Latest filing: Kreps Matthew (Director) on 2026-09-30.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-09-30 | Kreps Matthew | Director | Grant | 1K | $0.00 | $0 | 3K |
| 2026-09-30 | Winn Charles Arch | Director | Grant | 1K | $0.00 | $0 | 14K |
| 2026-09-30 | Halinski John William | Director | Grant | 1K | $0.00 | $0 | 14K |
| 2026-09-30 | Stober Eric | Director | Grant | 1K | $0.00 | $0 | 21K |
| 2026-09-30 | Wilkinson Tom | Director | Grant | 1K | $0.00 | $0 | 32K |
| 2026-09-30 | MCFARLAND ROBERT N | Director | Grant | 1K | $0.00 | $0 | 22K |
| 2026-09-01 | Winn Charles Arch | Director | Grant | 2K | $0.00 | $0 | 13K |
| 2026-07-22 | Badugu Nihanth | Chief Operating Officer | Grant | 5K | $0.00 | $0 | 5K |
| 2026-07-16 | Kreps Matthew | Director | Grant | 2K | $0.00 | $0 | 2K |
| 2026-07-16 | Halinski John William | Director | Grant | 2K | $0.00 | $0 | 11K |
| 2026-07-16 | Stober Eric | Director | Grant | 2K | $0.00 | $0 | 18K |
| 2026-07-09 | Halinski John William | Director | Grant | 1K | $0.00 | $0 | 12K |
| 2026-07-09 | Winn Charles Arch | Director | Grant | 1K | $0.00 | $0 | 11K |
| 2026-07-09 | MCFARLAND ROBERT N | Director | Grant | 1K | $0.00 | $0 | 11K |
| 2026-07-09 | Stober Eric | Director | Grant | 1K | $0.00 | $0 | 20K |
| 2026-07-09 | Wilkinson Tom | Director | Grant | 1K | $0.00 | $0 | 31K |
| 2026-04-14 | Winn Charles Arch | Director | Grant | 6K | $0.00 | $0 | 10K |
| 2026-04-14 | Stober Eric | Director | Grant | 6K | $0.00 | $0 | 16K |
| 2026-04-14 | MCFARLAND ROBERT N | Director | Grant | 6K | $0.00 | $0 | 20K |
| 2026-04-14 | Wilkinson Tom | Director | Grant | 6K | $0.00 | $0 | 30K |
| 2025-10-03 | Leonard Braden Michael | 10% owner | Sell | 9K | $5.83 | $53K | 0 |
| 2025-10-03 | Leonard Braden Michael | 10% owner | Sell | 220K | $7.13 | $1.6M | 0 |
| 2025-05-22 | Canas Jennifer | Chief Financial Officer | Grant | 5K | $0.00 | $0 | 5K |
| 2025-05-14 | Wilkinson Thomas Wiley | Director | Grant | 3K | $0.00 | $0 | 24K |
| 2025-05-14 | Winn Charles Arch | Director | Grant | 3K | $0.00 | $0 | 4K |
| 2025-05-14 | Halinski John William | Director | Grant | 3K | $0.00 | $0 | 3K |
| 2025-05-14 | Pickens Thomas Boone III | CEO | Grant | 50K | $0.00 | $0 | 181K |
| 2025-05-14 | Stober Eric | Director | Grant | 3K | $0.00 | $0 | 10K |
| 2025-05-14 | MCFARLAND ROBERT N | Director | Grant | 3K | $0.00 | $0 | 14K |
| 2025-05-14 | Halinski John William | Director | Grant | 6K | $0.00 | $0 | 9K |
| 2024-05-29 | Becker James Frank | Director | Buy | 1K | $9.82 | $11K | 16K |
| 2024-05-28 | Becker James Frank | Director | Buy | 934 | $9.50 | $9K | 15K |
| 2024-05-21 | Wilkinson Thomas Wiley | Director | Buy | 1K | $9.50 | $11K | 21K |
| 2024-03-15 | Becker James Frank | Director | Buy | 649 | $8.25 | $5K | 14K |
| 2024-03-15 | Russler Daniel T Jr | Director | Buy | 387 | $8.42 | $3K | 15K |
| 2024-03-13 | Wilkinson Thomas Wiley | Director | Buy | 1K | $8.28 | $11K | 20K |
| 2024-03-13 | Becker James Frank | Director | Buy | 839 | $8.16 | $7K | 13K |
| 2024-03-12 | Becker James Frank | Director | Buy | 958 | $8.14 | $8K | 13K |
| 2024-03-12 | Russler Daniel T Jr | Director | Buy | 500 | $8.29 | $4K | 15K |
| 2023-12-29 | MCFARLAND ROBERT N | Director | Buy | 21 | $8.34 | $175 | 10K |
| 2023-12-27 | MCFARLAND ROBERT N | Director | Buy | 1K | $8.19 | $10K | 10K |
| 2023-12-11 | Russler Daniel T Jr | Director | Buy | 650 | $7.65 | $5K | 14K |
| 2023-11-28 | Becker James Frank | Director | Buy | 490 | $8.13 | $4K | 12K |
| 2023-11-28 | Hinojosa Jaime | CFO | Buy | 1K | $8.19 | $8K | 7K |
| 2023-11-22 | Becker James Frank | Director | Buy | 1K | $7.47 | $8K | 11K |
| 2023-11-20 | MCFARLAND ROBERT N | Director | Buy | 1K | $7.80 | $10K | 8K |
| 2023-11-17 | Becker James Frank | Director | Buy | 1K | $7.66 | $10K | 10K |
| 2023-11-17 | MCFARLAND ROBERT N | Director | Buy | 54 | $7.50 | $405 | 7K |
| 2023-11-16 | Wilkinson Thomas Wiley | Director | Buy | 2K | $7.47 | $11K | 18K |
| 2023-09-29 | Wilkinson Thomas Wiley | Director | Grant | 5K | $10.10 | $51K | 17K |
| 2023-09-29 | MCFARLAND ROBERT N | Director | Grant | 5K | $10.10 | $51K | 7K |
| 2023-09-29 | Russler Daniel T Jr | Director | Grant | 5K | $10.10 | $51K | 13K |
| 2023-09-29 | Becker James Frank | Director | Grant | 5K | $10.10 | $51K | 9K |
| 2023-05-23 | Hinojosa Jaime | CFO | Buy | 900 | $9.49 | $9K | 8K |
| 2023-05-18 | Wilkinson Thomas Wiley | Director | Buy | 1K | $10.81 | $11K | 12K |
| 2023-05-18 | Becker James Frank | Director | Buy | 48 | $10.71 | $514 | 4K |
| 2023-03-15 | MCFARLAND ROBERT N | Director | Buy | 1K | $8.50 | $10K | 11K |
| 2023-03-15 | Russler Daniel T Jr | Director | Buy | 500 | $10.85 | $5K | 8K |
| 2023-03-09 | Becker James Frank | Director | Buy | 403 | $13.00 | $5K | 4K |
| 2023-03-06 | Becker James Frank | Director | Buy | 465 | $12.90 | $6K | 3K |
| 2023-02-21 | Wilkinson Thomas Wiley | Director | Buy | 875 | $11.96 | $10K | 11K |
| 2023-02-17 | Hinojosa Jaime | CFO | Buy | 1K | $11.91 | $12K | 6K |
| 2022-12-12 | Becker James Frank | Director | Buy | 476 | $10.41 | $5K | 3K |
| 2022-12-02 | Leonard Braden Michael | TenPercentOwner | Buy | 191K | $0.34 | $65K | 6.6M |
| 2022-11-29 | Hinojosa Jaime | CFO | Buy | 32K | $0.33 | $11K | 148K |
| 2022-11-23 | Leonard Braden Michael | TenPercentOwner | Buy | 75K | $0.33 | $25K | 6.4M |
| 2022-11-18 | Leonard Braden Michael | TenPercentOwner | Buy | 134K | $0.39 | $52K | 6.3M |
| 2022-11-17 | Leonard Braden Michael | TenPercentOwner | Buy | 94K | $0.36 | $34K | 6.2M |
| 2022-11-16 | Leonard Braden Michael | TenPercentOwner | Buy | 163K | $0.36 | $59K | 6.1M |
| 2022-10-18 | Leonard Braden Michael | TenPercentOwner | Buy | 50K | $0.39 | $20K | 6.0M |
| 2022-10-14 | Leonard Braden Michael | TenPercentOwner | Buy | 166K | $0.38 | $63K | 5.9M |
| 2022-10-07 | Becker James Frank | Director | Grant | 28K | price not stated in the filing | not stated | 83K |
| 2022-10-07 | Wilkinson Thomas Wiley | Director | Grant | 28K | price not stated in the filing | not stated | 302K |
| 2022-10-07 | Russler Daniel T Jr | Director | Grant | 28K | price not stated in the filing | not stated | 236K |
| 2022-09-27 | Leonard Braden Michael | TenPercentOwner | Buy | 158K | $0.44 | $69K | 5.7M |
| 2022-09-26 | Leonard Braden Michael | TenPercentOwner | Buy | 100K | $0.44 | $44K | 5.6M |
| 2022-09-23 | Leonard Braden Michael | TenPercentOwner | Buy | 100K | $0.43 | $43K | 5.5M |
| 2022-09-02 | Leonard Braden Michael | TenPercentOwner | Buy | 130K | $0.47 | $61K | 5.4M |
| 2022-09-01 | Leonard Braden Michael | TenPercentOwner | Buy | 122K | $0.46 | $56K | 5.3M |
| 2022-08-24 | Leonard Braden Michael | TenPercentOwner | Buy | 168K | $0.47 | $79K | 5.1M |
| 2022-08-23 | Leonard Braden Michael | TenPercentOwner | Buy | 312K | $0.45 | $140K | 5.0M |
| 2022-07-22 | Becker James Frank | Director | Grant | 5K | price not stated in the filing | not stated | 55K |
| 2022-07-22 | Wilkinson Thomas Wiley | Director | Grant | 29K | price not stated in the filing | not stated | 274K |
| 2022-07-22 | Russler Daniel T Jr | Director | Grant | 29K | price not stated in the filing | not stated | 208K |
| 2022-04-15 | Stober Eric | Other | Returned to company | 233K | $2.02 | $471K | 220K |
| 2022-04-14 | CANTWELL RONALD W | Director | Grant | 50K | $0.64 | $32K | 182K |
| 2022-04-14 | Russler Daniel T Jr | Director | Grant | 50K | $0.64 | $32K | 179K |
| 2022-04-14 | Wilkinson Thomas Wiley | Director | Grant | 100K | $0.64 | $64K | 245K |
| 2022-04-14 | Pickens Thomas Boone III | CEO | Grant | 1.0M | $0.64 | $640K | 4.2M |
| 2022-04-01 | Wilkinson Thomas Wiley | Director | Grant | 17K | price not stated in the filing | not stated | 145K |
| 2022-04-01 | Russler Daniel T Jr | Director | Grant | 17K | price not stated in the filing | not stated | 129K |
| 2022-04-01 | CANTWELL RONALD W | Director | Grant | 17K | price not stated in the filing | not stated | 132K |
| 2022-01-04 | Wilkinson Thomas Wiley | Director | Grant | 18K | price not stated in the filing | not stated | 128K |
| 2022-01-04 | Russler Daniel T Jr | Director | Grant | 18K | price not stated in the filing | not stated | 111K |
| 2022-01-04 | CANTWELL RONALD W | Director | Grant | 18K | price not stated in the filing | not stated | 115K |
| 2021-10-22 | Wilkinson Thomas Wiley | Director | Grant | 9K | price not stated in the filing | not stated | 109K |
| 2021-10-22 | Wilkinson Thomas Wiley | Director | Grant | 12K | price not stated in the filing | not stated | 109K |
| 2021-10-22 | Russler Daniel T Jr | Director | Grant | 9K | price not stated in the filing | not stated | 93K |
| 2021-10-22 | Russler Daniel T Jr | Director | Grant | 12K | price not stated in the filing | not stated | 93K |
| 2021-10-22 | CANTWELL RONALD W | Director | Grant | 12K | price not stated in the filing | not stated | 97K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSONNo holder on file reports 5% or more of ASTC in its latest filing.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-07-01 | 13G/Ano. 1 | Skylark Partners I, LPpartnership | 100 | 0.0% | 2026-06-30 |
| 2025-10-07 | 13D/Ano. 1 | BML Investment Partners, L.P.partnership | 0 | 0.0% | 2025-10-03 |
| 2025-10-07 | 13D/Ano. 1 | Leonard Braden Michaelindividual | 0 | 0.0% | 2025-10-03 |
What this page is
Astrotech in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Astrotech (ASTC), SEC CIK 1001907, listed on Nasdaq, classified by the SEC as laboratory analytical instruments. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-03.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-10-02.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-07-01.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-09-25.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-09-30.JSON and CSV
- Company record
- EDGAR filing index for CIK 1001907Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
Other companies the SEC classifies as laboratory analytical instruments
Other company pages
Datasets
Frequently Asked Questions
How much of ASTC is sold short?
61,524 shares were held short at the 2026-10-15 settlement, 1.9 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is ASTC's daily short volume?
On 2026-11-03, 6,194 of the 9,476 ASTC shares reported to FINRA were sold short, 65.4% of the day's reported volume. Short volume is a flow for one day, not a position.
Does ASTC have fails to deliver?
The SEC's latest file shows 22 ASTC shares failed to deliver at settlement 2026-10-02. Fails are reported per settlement date and published twice a month with a lag.
Are ASTC insiders buying or selling?
No open-market insider trades were reported for ASTC in the last 90 days. The most recent filings are listed below. Latest filing: Kreps Matthew (Director) on 2026-09-30.
Who owns 5% or more of ASTC?
No holder on file reports 5% or more of ASTC in its latest filing.
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