Harrow (HROW)
Harrow on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as pharmaceutical preparations.
7.5M
Short interest
settlement 2026-10-15
11.2
Days to cover
-1.2 days vs prior
70.6%
Short share of volume
2026-11-02
4,911
Fails to deliver
settlement 2026-10-14
Mon 9 Nov
Next earnings
estimated date
-$450K
Insider flow, 90 days
0 buys, 1 sells
As of 2026-11-02.
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 HROW is 7,474,800 shares, down 13,581 shares over the last month. Over the last 48 readings it ranged from 2,507,664 shares (15 November 2024) to 7,762,798 shares (30 September 2026). The latest reading sits at the top of that range. At the reported average volume of 666K shares a day that is 11.2 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 7,474,800 | -3.7% | 665,535 | 11.23 |
| 2026-09-30 | 7,762,798 | +3.7% | 626,927 | 12.38 |
| 2026-09-15 | 7,488,381 | +10.5% | 477,523 | 15.68 |
| 2026-08-31 | 6,778,977 | +6.6% | 495,125 | 13.69 |
| 2026-08-14 | 6,358,236 | -6.3% | 616,836 | 10.31 |
| 2026-07-31 | 6,783,121 | -0.9% | 576,307 | 11.77 |
| 2026-07-15 | 6,844,497 | -4.3% | 542,217 | 12.62 |
| 2026-06-30 | 7,148,618 | -2.2% | 922,049 | 7.75 |
| 2026-06-15 | 7,307,447 | +9.3% | 737,703 | 9.91 |
| 2026-05-29 | 6,688,674 | +3.0% | 795,590 | 8.41 |
| 2026-05-15 | 6,493,490 | +0.3% | 1,249,580 | 5.20 |
| 2026-04-30 | 6,477,178 | +1.1% | 550,949 | 11.76 |
| 2026-04-15 | 6,406,766 | -6.6% | 386,740 | 16.57 |
| 2026-03-31 | 6,859,908 | +9.8% | 614,317 | 11.17 |
| 2026-03-13 | 6,245,393 | +16.0% | 1,599,810 | 3.90 |
| 2026-02-27 | 5,382,770 | -6.0% | 498,858 | 10.79 |
| 2026-02-13 | 5,727,621 | +0.3% | 555,125 | 10.32 |
| 2026-01-30 | 5,707,531 | +2.9% | 467,339 | 12.21 |
| 2026-01-15 | 5,548,869 | +0.8% | 682,797 | 8.13 |
| 2025-12-31 | 5,503,696 | -1.7% | 473,199 | 11.63 |
| 2025-12-15 | 5,599,873 | -7.3% | 596,985 | 9.38 |
| 2025-11-28 | 6,043,931 | +1.9% | 435,118 | 13.89 |
| 2025-11-14 | 5,928,336 | +4.3% | 967,284 | 6.13 |
| 2025-10-31 | 5,684,460 | -0.3% | 515,691 | 11.02 |
| 2025-10-15 | 5,700,921 | +2.4% | 1,016,562 | 5.61 |
| 2025-09-30 | 5,566,296 | +6.4% | 833,720 | 6.68 |
| 2025-09-15 | 5,230,174 | +5.7% | 536,101 | 9.76 |
| 2025-08-29 | 4,949,769 | +2.8% | 469,060 | 10.55 |
| 2025-08-15 | 4,815,564 | +6.9% | 814,980 | 5.91 |
| 2025-07-31 | 4,503,568 | +8.6% | 439,363 | 10.25 |
| 2025-07-15 | 4,147,710 | +0.3% | 447,621 | 9.27 |
| 2025-06-30 | 4,134,851 | +1.7% | 360,413 | 11.47 |
| 2025-06-13 | 4,064,795 | -3.4% | 468,202 | 8.68 |
| 2025-05-30 | 4,207,912 | +1.1% | 411,240 | 10.23 |
| 2025-05-15 | 4,162,568 | +1.1% | 558,307 | 7.46 |
| 2025-04-30 | 4,117,757 | +8.7% | 333,452 | 12.35 |
| 2025-04-15 | 3,787,128 | +12.8% | 579,447 | 6.54 |
| 2025-03-31 | 3,357,363 | +14.9% | 898,653 | 3.74 |
| 2025-03-14 | 2,921,019 | +6.3% | 447,380 | 6.53 |
| 2025-02-28 | 2,748,965 | +0.8% | 306,562 | 8.97 |
| 2025-02-14 | 2,727,863 | -8.3% | 336,755 | 8.10 |
| 2025-01-31 | 2,974,879 | -1.8% | 328,219 | 9.06 |
| 2025-01-15 | 3,029,488 | -2.7% | 315,742 | 9.59 |
| 2024-12-31 | 3,113,540 | +5.0% | 336,355 | 9.26 |
| 2024-12-13 | 2,966,100 | +3.3% | 373,121 | 7.95 |
| 2024-11-29 | 2,870,563 | +14.5% | 471,102 | 6.09 |
| 2024-11-15 | 2,507,664 | -2.9% | 768,491 | 3.26 |
| 2024-10-31 | 2,583,138 | -25.9% | 564,404 | 4.58 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 2 November 2026, the short share of HROW volume is 70.6%, down 1.5 points over the last five sessions. Over the last 30 readings it ranged from 47.8% (30 October 2026) to 79.3% (21 October 2026). The latest reading is 7.0 points above the 30-session average of 63.6%, on 280K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-02 | 198K | 280K | 70.6% | 12 |
| 2026-10-30 | 64K | 135K | 47.8% | 22 |
| 2026-10-29 | 78K | 118K | 66.5% | 0 |
| 2026-10-28 | 96K | 131K | 73.5% | 0 |
| 2026-10-27 | 201K | 279K | 72.0% | 0 |
| 2026-10-26 | 161K | 223K | 72.1% | 0 |
| 2026-10-23 | 269K | 436K | 61.8% | 1 |
| 2026-10-22 | 104K | 179K | 58.5% | 0 |
| 2026-10-21 | 129K | 163K | 79.3% | 20 |
| 2026-10-20 | 118K | 180K | 65.6% | 0 |
| 2026-10-19 | 159K | 235K | 67.9% | 1 |
| 2026-10-16 | 117K | 242K | 48.3% | 697 |
| 2026-10-15 | 134K | 208K | 64.8% | 601 |
| 2026-10-14 | 159K | 324K | 49.1% | 13,318 |
| 2026-10-13 | 176K | 357K | 49.2% | 1,400 |
| 2026-10-12 | 138K | 221K | 62.3% | 8,334 |
| 2026-10-09 | 348K | 625K | 55.6% | 26,200 |
| 2026-10-08 | 144K | 269K | 53.6% | 110 |
| 2026-10-07 | 152K | 228K | 66.9% | 0 |
| 2026-10-06 | 109K | 173K | 63.0% | 0 |
| 2026-10-05 | 114K | 188K | 60.7% | 0 |
| 2026-10-02 | 115K | 217K | 53.3% | 313 |
| 2026-10-01 | 191K | 260K | 73.2% | 2,100 |
| 2026-09-30 | 144K | 191K | 75.4% | 1 |
| 2026-09-29 | 106K | 165K | 64.1% | 22 |
| 2026-09-28 | 234K | 347K | 67.4% | 0 |
| 2026-09-25 | 92K | 137K | 66.8% | 0 |
| 2026-09-24 | 102K | 132K | 77.2% | 40 |
| 2026-09-23 | 96K | 144K | 66.6% | 0 |
| 2026-09-22 | 86K | 160K | 54.1% | 275 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 14 October 2026, the fails-to-deliver balance in HROW is 4,911 shares, down 67,179 shares over the last settlement date. Over the last 30 readings it ranged from 2 shares (25 September 2026) to 72,090 shares (13 October 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-14 | 4,911 | $28.24 | $139K |
| 2026-10-13 | 72,090 | $29.11 | $2.1M |
| 2026-10-09 | 52,796 | $30.52 | $1.6M |
| 2026-10-08 | 54,715 | $30.62 | $1.7M |
| 2026-10-02 | 37,178 | $30.61 | $1.1M |
| 2026-10-01 | 1,315 | $30.80 | $41K |
| 2026-09-28 | 82 | $33.07 | $3K |
| 2026-09-25 | 2 | $33.10 | $66 |
| 2026-09-24 | 400 | $33.60 | $13K |
| 2026-09-22 | 58,795 | $33.92 | $2.0M |
| 2026-09-17 | 43 | $34.21 | $1K |
| 2026-09-15 | 5,141 | $34.07 | $175K |
| 2026-09-14 | 37,773 | $34.48 | $1.3M |
| 2026-09-11 | 30 | $36.58 | $1K |
| 2026-09-09 | 4,741 | $37.85 | $179K |
| 2026-09-08 | 2,715 | $38.54 | $105K |
| 2026-09-04 | 773 | $38.26 | $30K |
| 2026-09-03 | 4,343 | $39.05 | $170K |
| 2026-08-31 | 3,593 | $37.27 | $134K |
| 2026-08-26 | 53 | $41.33 | $2K |
| 2026-08-25 | 731 | $39.80 | $29K |
| 2026-08-24 | 50,906 | $40.95 | $2.1M |
| 2026-08-18 | 1,002 | $39.48 | $40K |
| 2026-08-14 | 8,842 | $38.87 | $344K |
| 2026-08-05 | 5 | $39.83 | $199 |
| 2026-08-03 | 746 | $38.77 | $29K |
| 2026-07-29 | 6,035 | $39.32 | $237K |
| 2026-07-28 | 27,758 | $37.46 | $1.0M |
| 2026-07-27 | 21,198 | $38.45 | $815K |
| 2026-07-24 | 336 | $41.88 | $14K |
Insider trades
SEC Form 4, newest first. JSONInsiders at HROW reported 1 open-market sell worth $450K in the last 90 days and no open-market buys. Latest filing: Shojaei Amir (CHIEF SCIENTIFIC OFFICER) on 2026-08-14.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-08-14 | Shojaei Amir | CHIEF SCIENTIFIC OFFICER | Sell | 11K | $40.00 | $450K | 0 |
| 2026-08-14 | Shojaei Amir | CHIEF SCIENTIFIC OFFICER | Exercise or conversion | 11K | $35.96 | $405K | 11K |
| 2026-05-18 | SILVERNAIL LAUREN P | Director | Buy | 1K | $31.00 | $31K | 1K |
| 2026-05-18 | Graves Adrienne L | Director | Buy | 1K | $31.07 | $31K | 1K |
| 2026-05-14 | BOLL ANDREW R. | PRESIDENT AND CFO | Buy | 4K | $29.90 | $105K | 815K |
| 2026-05-14 | BAUM MARK L | CHIEF EXECUTIVE OFFICER | Buy | 10K | $30.20 | $302K | 3.0M |
| 2026-03-04 | Opaleye Management Inc. | 10% owner | Sell | 4K | $39.67 | $169K | 59K |
| 2026-03-04 | Opaleye Management Inc. | 10% owner | Sell | 134K | $39.67 | $5.3M | 3.6M |
| 2026-03-03 | Opaleye Management Inc. | 10% owner | Sell | 1K | $39.15 | $51K | 64K |
| 2026-03-03 | Opaleye Management Inc. | 10% owner | Sell | 59K | $39.15 | $2.3M | 3.8M |
| 2026-02-27 | Opaleye Management Inc. | 10% owner | Sell | 5K | $54.18 | $271K | 65K |
| 2026-01-06 | Opaleye Management Inc. | 10% owner | Sell | 20K | $53.35 | $1.1M | 70K |
| 2025-12-12 | BOLL ANDREW R. | PRESIDENT AND CFO | Tax withholding | 27K | $47.06 | $1.3M | 811K |
| 2025-12-12 | BOLL ANDREW R. | PRESIDENT AND CFO | Exercise or conversion | 60K | $3.95 | $237K | 838K |
| 2025-12-12 | BAUM MARK L | CHIEF EXECUTIVE OFFICER | Tax withholding | 80K | $47.06 | $3.8M | 3.0M |
| 2025-12-12 | BAUM MARK L | CHIEF EXECUTIVE OFFICER | Exercise or conversion | 180K | $3.95 | $711K | 3.1M |
| 2025-07-21 | BAUM MARK L | CHIEF EXECUTIVE OFFICER | Tax withholding | 313K | $37.08 | $11.6M | 2.9M |
| 2025-07-21 | BAUM MARK L | CHIEF EXECUTIVE OFFICER | Exercise or conversion | 600K | $7.87 | $4.7M | 3.2M |
| 2025-06-10 | Opaleye Management Inc. | TenPercentOwner | Sell | 15K | $30.80 | $462K | 90K |
| 2025-06-09 | Opaleye Management Inc. | TenPercentOwner | Sell | 15K | $30.37 | $462K | 105K |
| 2025-06-04 | Opaleye Management Inc. | TenPercentOwner | Sell | 2K | $30.02 | $54K | 120K |
| 2025-06-03 | Opaleye Management Inc. | TenPercentOwner | Sell | 3K | $30.04 | $90K | 122K |
| 2025-05-13 | Opaleye Management Inc. | TenPercentOwner | Sell | 5K | $26.59 | $133K | 125K |
| 2025-05-12 | Opaleye Management Inc. | TenPercentOwner | Sell | 10K | $25.90 | $259K | 130K |
| 2025-04-07 | BAUM MARK L | Chief Executive Officer | Tax withholding | 300K | $23.09 | $6.9M | 2.6M |
| 2025-04-07 | SAHAREK JOHN P. | CEO & President, ImprimisRx | Tax withholding | 109K | $23.09 | $2.5M | 467K |
| 2025-04-07 | BOLL ANDREW R. | Chief Financial Officer | Tax withholding | 137K | $23.09 | $3.2M | 778K |
| 2025-04-03 | BAUM MARK L | Chief Executive Officer | Exercise or conversion | 762K | $0.00 | $0 | 2.9M |
| 2025-04-03 | SAHAREK JOHN P. | CEO & President, ImprimisRx | Exercise or conversion | 277K | $0.00 | $0 | 577K |
| 2025-04-03 | BOLL ANDREW R. | Chief Financial Officer | Exercise or conversion | 347K | $0.00 | $0 | 915K |
| 2025-03-24 | Opaleye Management Inc. | TenPercentOwner | Sell | 5K | $30.01 | $150K | 140K |
| 2025-03-18 | Opaleye Management Inc. | TenPercentOwner | Sell | 5K | $29.64 | $148K | 145K |
| 2025-03-18 | Opaleye Management Inc. | TenPercentOwner | Sell | 5K | $30.01 | $150K | 140K |
| 2025-02-28 | Opaleye Management Inc. | TenPercentOwner | Sell | 5K | $28.05 | $140K | 150K |
| 2025-01-22 | Opaleye Management Inc. | TenPercentOwner | Sell | 20K | $35.59 | $712K | 155K |
| 2024-09-11 | SAHAREK JOHN P. | CEO of ImprimisRx | Tax withholding | 45K | $41.37 | $1.9M | 300K |
| 2024-09-11 | SAHAREK JOHN P. | CEO of ImprimisRx | Exercise or conversion | 90K | $7.37 | $663K | 345K |
| 2024-04-25 | Opaleye Management Inc. | TenPercentOwner | Buy | 20K | $9.97 | $199K | 3.8M |
| 2024-04-24 | Opaleye Management Inc. | TenPercentOwner | Buy | 8K | $10.15 | $84K | 3.8M |
| 2024-04-23 | Opaleye Management Inc. | TenPercentOwner | Buy | 12K | $10.29 | $121K | 3.8M |
| 2024-04-19 | Opaleye Management Inc. | TenPercentOwner | Buy | 29K | $10.56 | $310K | 3.8M |
| 2024-03-28 | Opaleye Management Inc. | TenPercentOwner | Buy | 50K | $12.82 | $641K | 3.7M |
| 2024-03-22 | BAUM MARK L | CHIEF EXECUTIVE OFFICER | Buy | 9K | $11.59 | $104K | 2.1M |
| 2024-03-20 | Opaleye Management Inc. | TenPercentOwner | Buy | 51K | $9.65 | $488K | 3.7M |
| 2024-03-01 | SAHAREK JOHN P. | CEO of ImprimisRx | Exercise or conversion | 5K | $8.75 | $44K | 255K |
| 2024-02-20 | BAUM MARK L | CHIEF EXECUTIVE OFFICER | Exercise or conversion | 150K | $10.67 | $1.6M | 2.2M |
| 2024-02-20 | BAUM MARK L | CHIEF EXECUTIVE OFFICER | Exercise or conversion | 60K | $10.67 | $638K | 2.1M |
| 2024-02-20 | BOLL ANDREW R. | CHIEF FINANCIAL OFFICER | Exercise or conversion | 18K | $10.67 | $197K | 568K |
| 2024-02-20 | BOLL ANDREW R. | CHIEF FINANCIAL OFFICER | Exercise or conversion | 45K | $10.67 | $480K | 587K |
| 2024-02-20 | SAHAREK JOHN P. | CEO of ImprimisRx | Exercise or conversion | 30K | $10.67 | $320K | 262K |
| 2024-02-20 | SAHAREK JOHN P. | CEO of ImprimisRx | Exercise or conversion | 13K | $10.67 | $135K | 250K |
| 2024-02-07 | BOLL ANDREW R. | CHIEF FINANCIAL OFFICER | Exercise or conversion | 7K | $7.71 | $57K | 542K |
| 2024-02-07 | BAUM MARK L | CHIEF EXECUTIVE OFFICER | Exercise or conversion | 15K | $7.71 | $119K | 2.0M |
| 2023-11-16 | BAUM MARK L | Chief Executive Officer | Buy | 8K | $8.11 | $61K | 2.0M |
| 2023-11-15 | Opaleye Management Inc. | TenPercentOwner | Buy | 25K | $8.03 | $201K | 3.6M |
| 2023-11-10 | SAHAREK JOHN P. | Chief Commercial Officer | Tax withholding | 10K | $12.83 | $125K | 232K |
| 2023-11-10 | SAHAREK JOHN P. | Chief Commercial Officer | Exercise or conversion | 20K | price not stated in the filing | not stated | 242K |
| 2023-09-20 | Opaleye Management Inc. | TenPercentOwner | Buy | 6K | $14.49 | $87K | 3.6M |
| 2023-09-19 | Opaleye Management Inc. | TenPercentOwner | Buy | 14K | $14.65 | $205K | 3.6M |
| 2023-08-14 | Makary Martin A. | Director | Buy | 20K | $16.92 | $338K | 45K |
| 2023-08-14 | BAUM MARK L | Chief Executive Officer | Buy | 6K | $17.05 | $99K | 2.0M |
| 2023-07-18 | BOLL ANDREW R. | Chief Financial Officer | Tax withholding | 136K | $18.23 | $2.5M | 534K |
| 2023-07-18 | BOLL ANDREW R. | Chief Financial Officer | Exercise or conversion | 347K | price not stated in the filing | not stated | 671K |
| 2023-07-18 | SAHAREK JOHN P. | Chief Commercial Officer | Tax withholding | 109K | $18.23 | $2.0M | 222K |
| 2023-07-18 | SAHAREK JOHN P. | Chief Commercial Officer | Exercise or conversion | 277K | price not stated in the filing | not stated | 331K |
| 2023-07-18 | BAUM MARK L | Chief Executive Officer | Tax withholding | 300K | $18.23 | $5.5M | 2.0M |
| 2023-07-18 | BAUM MARK L | Chief Executive Officer | Exercise or conversion | 762K | price not stated in the filing | not stated | 2.3M |
| 2023-04-03 | BAUM MARK L | Chief Executive Officer | Exercise or conversion | 180K | $8.99 | $1.6M | 1.7M |
| 2023-04-03 | BAUM MARK L | Chief Executive Officer | Tax withholding | 118K | $20.97 | $2.5M | 1.5M |
| 2023-03-31 | BOLL ANDREW R. | Chief Financial Officer | Tax withholding | 34K | $21.16 | $729K | 324K |
| 2023-03-31 | BOLL ANDREW R. | Chief Financial Officer | Exercise or conversion | 90K | $6.00 | $540K | 358K |
| 2023-01-02 | BAUM MARK L | Chief Executive Officer | Exercise or conversion | 88K | price not stated in the filing | not stated | 1.5M |
| 2023-01-02 | BAUM MARK L | Chief Executive Officer | Tax withholding | 35K | $14.76 | $519K | 1.5M |
| 2023-01-02 | BOLL ANDREW R. | Chief Financial Officer | Tax withholding | 10K | $14.76 | $142K | 268K |
| 2023-01-02 | BOLL ANDREW R. | Chief Financial Officer | Exercise or conversion | 23K | price not stated in the filing | not stated | 278K |
| 2022-12-22 | Van Horn R. Lawrence | Director | Buy | 2K | $13.42 | $25K | 2K |
| 2022-12-22 | BOLL ANDREW R. | Chief Financial Officer | Buy | 3K | $13.54 | $34K | 255K |
| 2022-12-22 | BAUM MARK L | Chief Executive Officer | Buy | 25K | $13.39 | $335K | 1.4M |
| 2022-12-21 | Makary Martin A. | Director | Buy | 25K | $13.37 | $334K | 25K |
| 2022-12-14 | Opaleye Management Inc. | TenPercentOwner | Buy | 16K | $10.52 | $170K | 175K |
| 2022-12-14 | Opaleye Management Inc. | TenPercentOwner | Buy | 415K | $10.52 | $4.4M | 3.6M |
| 2022-09-30 | LINDSTROM RICHARD L MD | Director | Sell | 40K | $12.62 | $505K | 26K |
| 2022-09-28 | Opaleye Management Inc. | TenPercentOwner | Buy | 1K | $9.77 | $11K | 159K |
| 2022-09-28 | Opaleye Management Inc. | TenPercentOwner | Buy | 10K | $9.77 | $98K | 3.2M |
| 2022-04-13 | Opaleye Management Inc. | TenPercentOwner | Buy | 10K | $6.76 | $68K | 3.2M |
| 2022-04-13 | Opaleye Management Inc. | TenPercentOwner | Buy | 3K | $6.76 | $19K | 158K |
| 2022-04-12 | Opaleye Management Inc. | TenPercentOwner | Buy | 4K | $6.75 | $24K | 155K |
| 2022-04-12 | Opaleye Management Inc. | TenPercentOwner | Buy | 25K | $6.75 | $169K | 3.2M |
| 2022-02-19 | SAHAREK JOHN P. | President, ImprimisRx | Tax withholding | 26K | $7.87 | $204K | 54K |
| 2022-02-19 | SAHAREK JOHN P. | President, ImprimisRx | Exercise or conversion | 50K | price not stated in the filing | not stated | 80K |
| 2022-02-19 | BOLL ANDREW R. | Chief Financial Officer | Tax withholding | 21K | $7.87 | $162K | 253K |
| 2022-02-19 | BOLL ANDREW R. | Chief Financial Officer | Exercise or conversion | 50K | price not stated in the filing | not stated | 273K |
| 2022-01-28 | Opaleye Management Inc. | TenPercentOwner | Buy | 1K | $6.89 | $9K | 150K |
| 2022-01-28 | Opaleye Management Inc. | TenPercentOwner | Buy | 5K | $6.89 | $34K | 3.1M |
| 2022-01-20 | BAUM MARK L | Chief Executive Officer | Tax withholding | 71K | $8.33 | $595K | 1.4M |
| 2022-01-20 | BAUM MARK L | Chief Executive Officer | Exercise or conversion | 125K | $2.40 | $300K | 1.5M |
| 2021-09-24 | LINDSTROM RICHARD L MD | Director | Sell | 4K | $10.04 | $39K | 66K |
| 2021-09-16 | LINDSTROM RICHARD L MD | Director | Sell | 6K | $9.02 | $53K | 70K |
| 2021-09-15 | LINDSTROM RICHARD L MD | Director | Sell | 14K | $9.09 | $129K | 76K |
| 2021-08-19 | Opaleye Management Inc. | TenPercentOwner | Buy | 50K | $8.45 | $423K | 3.1M |
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.
Planned sales (Form 144)
Newest first. JSON1 Form 144 notice on file for HROW worth $450K at the prices reported; 1 in the last 90 days worth $450K. Latest: AMIR SHOJAEI filed on 2026-08-21 to sell 11,250 shares ($450K) from 2026-08-14.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-08-21 | AMIR SHOJAEICHIEF SCIENTIFIC OFFICER | 11K | $450K | 0.030% | 2026-08-14 | MORGAN STANLEY SMITH BARNEY |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON5 holders report 5% or more of HROW in their latest filing, all on Schedule 13G (passive). The largest reported stake is BlackRock, Inc. at 7.4% of the class (2,757,783 shares), filed 2026-10-27 for an event on 2026-09-30.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-10-27 | 13G/Ano. 1 | BlackRock, Inc.parent holding company | 2.8M | 7.4% | 2026-09-30 |
| 2026-07-31 | 13G/Ano. 9 | Opaleye Management Inc.investment adviser, corporation | 2.4M | 6.4% | 2026-06-30 |
| 2026-07-31 | 13G/Ano. 9 | Opaleye, L.P.partnership | 2.4M | 6.4% | 2026-06-30 |
| 2026-07-31 | 13G/Ano. 9 | James Silvermanindividual | 2.4M | 6.4% | 2026-06-30 |
| 2026-03-27 | 13G/Ano. 1 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
| 2026-03-11 | 13G | Daniel Kaufmanindividual | 1.9M | 5.0% | 2026-03-10 |
13F holders
Tracked managers holding HROW at their latest 13F. JSON4 of the 30 tracked managers held HROW at their latest 13F, $21.7M in total at quarter-end prices. Citadel Advisors is the largest at $15.3M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 3 added shares and 1 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Citadel Advisors | 2026-06-30 | 360K | $15.3M | 0.00% | +139K |
| Millennium Management | 2026-06-30 | 84K | $3.6M | 0.00% | new |
| Renaissance Technologies | 2026-06-30 | 45K | $1.9M | 0.00% | -40K |
| Two Sigma Investments | 2026-06-30 | 22K | $955K | 0.00% | new |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
What this page is
Harrow 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 Harrow (HROW), SEC CIK 1360214, listed on Nasdaq, classified by the SEC as pharmaceutical preparations. 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 2026-11-02.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-10-14.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-08-21.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 2026-10-27.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.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 2026-08-10.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 2026-08-14.JSON and CSV
- Company record
- EDGAR filing index for CIK 1360214Ticker, 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 pharmaceutical preparations
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- SWKStanley Black & Decker
- SWKSSkyworks Solutions
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- SYFSynchrony Financial
- SYKStryker
- SYNASynaptics
Datasets
Frequently Asked Questions
How much of HROW is sold short?
7,474,800 shares were held short at the 2026-10-15 settlement, 11.2 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 HROW's daily short volume?
On 2026-11-02, 197,832 of the 280,296 HROW shares reported to FINRA were sold short, 70.6% of the day's reported volume. Short volume is a flow for one day, not a position.
Does HROW have fails to deliver?
The SEC's latest file shows 4,911 HROW shares failed to deliver at settlement 2026-10-14. Fails are reported per settlement date and published twice a month with a lag.
Are HROW insiders buying or selling?
Insiders at HROW reported 1 open-market sell worth $450K in the last 90 days and no open-market buys. Latest filing: Shojaei Amir (CHIEF SCIENTIFIC OFFICER) on 2026-08-14.
Have HROW insiders filed to sell?
1 Form 144 notice on file for HROW worth $450K at the prices reported; 1 in the last 90 days worth $450K. Latest: AMIR SHOJAEI filed on 2026-08-21 to sell 11,250 shares ($450K) from 2026-08-14.
Who owns 5% or more of HROW?
5 holders report 5% or more of HROW in their latest filing, all on Schedule 13G (passive). The largest reported stake is BlackRock, Inc. at 7.4% of the class (2,757,783 shares), filed 2026-10-27 for an event on 2026-09-30.
Which tracked 13F managers own HROW?
4 of the 30 tracked 13F managers held HROW shares at their latest filing, $21.7M in all. The largest: Ken Griffin's Citadel Advisors (360K shares, $15.3M), Izzy Englander's Millennium Management (84K shares, $3.6M), Renaissance Technologies (45K shares, $1.9M), Two Sigma Investments (22K shares, $955K).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.