Si-Bone (SIBN)
Si-Bone on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as surgical & medical instruments & apparatus.
4.7M
Short interest
settlement 2026-10-15
8.7
Days to cover
unchanged vs prior
31.8%
Short share of volume
2026-11-02
1,018
Fails to deliver
settlement 2026-10-09
Mon 11 Jan
Next earnings
estimated date
-$5.0M
Insider flow, 90 days
0 buys, 27 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 SIBN is 4,704,576 shares, down 1,209,567 shares over the last month. Over the last 48 readings it ranged from 1,016,670 shares (31 January 2025) to 5,978,449 shares (30 June 2026). At the reported average volume of 543K shares a day that is 8.7 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 4,704,576 | -8.1% | 542,557 | 8.67 |
| 2026-09-30 | 5,116,241 | -13.5% | 591,117 | 8.66 |
| 2026-09-15 | 5,914,143 | +5.1% | 555,355 | 10.65 |
| 2026-08-31 | 5,626,900 | +5.4% | 570,725 | 9.86 |
| 2026-08-14 | 5,336,842 | +5.0% | 488,986 | 10.91 |
| 2026-07-31 | 5,080,650 | -7.7% | 466,131 | 10.90 |
| 2026-07-15 | 5,507,086 | -7.9% | 616,520 | 8.93 |
| 2026-06-30 | 5,978,449 | +0.9% | 702,381 | 8.51 |
| 2026-06-15 | 5,924,425 | +0.8% | 432,184 | 13.71 |
| 2026-05-29 | 5,879,708 | +3.1% | 543,269 | 10.82 |
| 2026-05-15 | 5,704,493 | +25.7% | 1,126,542 | 5.06 |
| 2026-04-30 | 4,537,455 | -2.0% | 497,310 | 9.12 |
| 2026-04-15 | 4,632,479 | +19.3% | 832,483 | 5.56 |
| 2026-03-31 | 3,882,808 | +7.7% | 599,692 | 6.47 |
| 2026-03-13 | 3,603,947 | +25.5% | 538,789 | 6.69 |
| 2026-02-27 | 2,871,776 | +6.7% | 655,700 | 4.38 |
| 2026-02-13 | 2,691,361 | +10.8% | 398,497 | 6.75 |
| 2026-01-30 | 2,429,780 | -6.3% | 496,126 | 4.90 |
| 2026-01-15 | 2,594,038 | +6.8% | 708,203 | 3.66 |
| 2025-12-31 | 2,428,753 | -0.0% | 386,284 | 6.29 |
| 2025-12-15 | 2,429,007 | -8.0% | 532,036 | 4.57 |
| 2025-11-28 | 2,639,548 | -7.0% | 625,646 | 4.22 |
| 2025-11-14 | 2,839,813 | +2.7% | 802,508 | 3.54 |
| 2025-10-31 | 2,765,679 | +4.1% | 295,244 | 9.37 |
| 2025-10-15 | 2,655,786 | +10.4% | 510,795 | 5.20 |
| 2025-09-30 | 2,406,382 | +14.0% | 424,753 | 5.67 |
| 2025-09-15 | 2,110,365 | -2.4% | 357,668 | 5.90 |
| 2025-08-29 | 2,162,155 | +5.4% | 318,626 | 6.79 |
| 2025-08-15 | 2,052,118 | +9.8% | 637,834 | 3.22 |
| 2025-07-31 | 1,868,592 | -0.6% | 292,637 | 6.39 |
| 2025-07-15 | 1,879,387 | -4.2% | 327,018 | 5.75 |
| 2025-06-30 | 1,961,909 | +12.7% | 535,439 | 3.66 |
| 2025-06-13 | 1,740,481 | -6.3% | 538,026 | 3.23 |
| 2025-05-30 | 1,857,088 | +14.7% | 423,948 | 4.38 |
| 2025-05-15 | 1,618,858 | +5.4% | 727,482 | 2.23 |
| 2025-04-30 | 1,535,315 | +1.4% | 278,927 | 5.50 |
| 2025-04-15 | 1,513,737 | -2.5% | 368,155 | 4.11 |
| 2025-03-31 | 1,552,064 | -12.4% | 345,730 | 4.49 |
| 2025-03-14 | 1,771,232 | +40.4% | 398,504 | 4.44 |
| 2025-02-28 | 1,261,829 | +17.5% | 670,467 | 1.88 |
| 2025-02-14 | 1,073,766 | +5.6% | 254,500 | 4.22 |
| 2025-01-31 | 1,016,670 | -10.0% | 285,915 | 3.56 |
| 2025-01-15 | 1,129,439 | +0.5% | 350,482 | 3.22 |
| 2024-12-31 | 1,123,812 | +4.5% | 305,201 | 3.68 |
| 2024-12-13 | 1,075,762 | -3.2% | 256,410 | 4.20 |
| 2024-11-29 | 1,110,912 | -12.4% | 295,562 | 3.76 |
| 2024-11-15 | 1,268,860 | -21.5% | 508,649 | 2.49 |
| 2024-10-31 | 1,616,131 | -15.1% | 421,534 | 3.83 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 2 November 2026, the short share of SIBN volume is 31.8%, down 7.2 points over the last five sessions. Over the last 30 readings it ranged from 30.5% (29 October 2026) to 86.6% (28 September 2026). The latest reading sits at the bottom of that range. The latest reading is 28.2 points below the 30-session average of 60.0%, on 435K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-02 | 138K | 435K | 31.8% | 49 |
| 2026-10-30 | 160K | 279K | 57.2% | 2,714 |
| 2026-10-29 | 86K | 283K | 30.5% | 0 |
| 2026-10-28 | 56K | 170K | 33.0% | 0 |
| 2026-10-27 | 73K | 151K | 48.4% | 0 |
| 2026-10-26 | 52K | 132K | 39.0% | 0 |
| 2026-10-23 | 96K | 182K | 52.7% | 0 |
| 2026-10-22 | 87K | 232K | 37.5% | 0 |
| 2026-10-21 | 174K | 290K | 60.2% | 7,945 |
| 2026-10-20 | 116K | 223K | 52.0% | 0 |
| 2026-10-19 | 69K | 109K | 63.5% | 0 |
| 2026-10-16 | 200K | 323K | 61.9% | 10,200 |
| 2026-10-15 | 97K | 132K | 73.5% | 3 |
| 2026-10-14 | 65K | 101K | 63.8% | 0 |
| 2026-10-13 | 67K | 104K | 64.9% | 0 |
| 2026-10-12 | 66K | 106K | 62.1% | 1 |
| 2026-10-09 | 85K | 134K | 63.5% | 0 |
| 2026-10-08 | 129K | 204K | 63.2% | 1,800 |
| 2026-10-07 | 150K | 185K | 81.2% | 0 |
| 2026-10-06 | 140K | 190K | 73.9% | 0 |
| 2026-10-05 | 123K | 206K | 59.6% | 5 |
| 2026-10-02 | 129K | 160K | 80.2% | 300 |
| 2026-10-01 | 160K | 251K | 63.8% | 0 |
| 2026-09-30 | 178K | 257K | 69.3% | 0 |
| 2026-09-29 | 209K | 261K | 80.0% | 10 |
| 2026-09-28 | 132K | 152K | 86.6% | 0 |
| 2026-09-25 | 135K | 251K | 53.9% | 0 |
| 2026-09-24 | 165K | 305K | 53.9% | 0 |
| 2026-09-23 | 162K | 234K | 69.0% | 0 |
| 2026-09-22 | 155K | 222K | 69.9% | 100 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 9 October 2026, the fails-to-deliver balance in SIBN is 1,018 shares, up 797 shares over the last settlement date. Over the last 30 readings it ranged from 3 shares (14 September 2026) to 24,417 shares (30 June 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-09 | 1,018 | $18.86 | $19K |
| 2026-10-05 | 221 | $18.08 | $4K |
| 2026-09-25 | 2,023 | $18.52 | $37K |
| 2026-09-14 | 3 | $18.38 | $55 |
| 2026-09-11 | 2,802 | $18.30 | $51K |
| 2026-09-02 | 11,380 | $18.92 | $215K |
| 2026-08-24 | 2,969 | $19.96 | $59K |
| 2026-08-20 | 14 | $19.91 | $279 |
| 2026-08-18 | 2,379 | $18.69 | $44K |
| 2026-08-11 | 259 | $18.84 | $5K |
| 2026-08-07 | 1,047 | $18.14 | $19K |
| 2026-08-06 | 348 | $18.04 | $6K |
| 2026-08-05 | 8,957 | $18.44 | $165K |
| 2026-07-28 | 10 | $17.05 | $171 |
| 2026-07-21 | 597 | $17.12 | $10K |
| 2026-07-16 | 2,465 | $17.25 | $43K |
| 2026-07-06 | 592 | $17.11 | $10K |
| 2026-07-02 | 2,064 | $16.80 | $35K |
| 2026-07-01 | 635 | $16.32 | $10K |
| 2026-06-30 | 24,417 | $16.88 | $412K |
| 2026-06-29 | 16,841 | $17.33 | $292K |
| 2026-06-26 | 15 | $16.76 | $251 |
| 2026-06-24 | 15,189 | $15.95 | $242K |
| 2026-06-22 | 2,234 | $15.84 | $35K |
| 2026-06-15 | 641 | $15.42 | $10K |
| 2026-06-02 | 920 | $13.87 | $13K |
| 2026-05-29 | 2,724 | $14.41 | $39K |
| 2026-05-04 | 3,965 | $13.21 | $52K |
| 2026-04-07 | 100 | $13.21 | $1K |
| 2026-03-12 | 415 | $14.05 | $6K |
Insider trades
SEC Form 4, newest first. JSONInsiders at SIBN reported 27 open-market sells worth $5.0M in the last 90 days and no open-market buys. Latest filing: Maheshwari Anshul (Chief Op & Financial Officer) on 2026-10-29.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-10-29 | Maheshwari Anshul | Chief Op & Financial Officer | Sell | 4K | $22.50 | $84K | 214K |
| 2026-10-29 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 30K | $22.11 | $656K | 164K |
| 2026-10-12 | FRANCIS LAURA | Chief Executive Officer | Sell | 38K | $20.05 | $762K | 379K |
| 2026-10-05 | Maheshwari Anshul | Chief Op & Financial Officer | Sell | 2K | $19.50 | $34K | 218K |
| 2026-10-02 | Maheshwari Anshul | Chief Op & Financial Officer | Sell | 2K | $18.19 | $32K | 220K |
| 2026-10-02 | Maheshwari Anshul | Chief Op & Financial Officer | Sell | 2K | $18.17 | $28K | 222K |
| 2026-10-02 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 34 | $18.14 | $617 | 271K |
| 2026-10-02 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 2K | $18.14 | $33K | 271K |
| 2026-10-02 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 1K | $18.20 | $24K | 272K |
| 2026-10-01 | DUNN JEFFREY W | Director | Sell | 20K | $18.47 | $369K | 16K |
| 2026-10-01 | DUNN JEFFREY W | Director | Exercise or conversion | 20K | $4.68 | $94K | 36K |
| 2026-09-01 | DUNN JEFFREY W | Director | Sell | 1K | $18.91 | $26K | 16K |
| 2026-09-01 | DUNN JEFFREY W | Director | Sell | 19K | $18.91 | $352K | 17K |
| 2026-09-01 | DUNN JEFFREY W | Director | Exercise or conversion | 1K | $4.68 | $6K | 36K |
| 2026-09-01 | DUNN JEFFREY W | Director | Exercise or conversion | 19K | $4.68 | $87K | 35K |
| 2026-08-24 | Maheshwari Anshul | Chief Op & Financial Officer | Sell | 12K | $20.11 | $234K | 223K |
| 2026-08-24 | FRANCIS LAURA | Chief Executive Officer | Sell | 26K | $20.12 | $523K | 291K |
| 2026-08-21 | Maheshwari Anshul | Chief Op & Financial Officer | Sell | 11K | $20.02 | $225K | 235K |
| 2026-08-21 | FRANCIS LAURA | Chief Executive Officer | Sell | 4K | $20.02 | $79K | 317K |
| 2026-08-20 | FRANCIS LAURA | Chief Executive Officer | Sell | 52K | $19.46 | $1.0M | 321K |
| 2026-08-19 | Maheshwari Anshul | Chief Op & Financial Officer | Sell | 6K | $19.55 | $112K | 246K |
| 2026-08-17 | Maheshwari Anshul | Chief Financial Officer | Sell | 2K | $18.62 | $41K | 252K |
| 2026-08-17 | Maheshwari Anshul | Chief Financial Officer | Sell | 2K | $18.68 | $46K | 254K |
| 2026-08-17 | FRANCIS LAURA | Chief Executive Officer | Sell | 2K | $18.63 | $37K | 494K |
| 2026-08-17 | FRANCIS LAURA | Chief Executive Officer | Sell | 2K | $18.68 | $42K | 490K |
| 2026-08-17 | FRANCIS LAURA | Chief Executive Officer | Sell | 3K | $18.66 | $60K | 493K |
| 2026-08-17 | FRANCIS LAURA | Chief Executive Officer | Sell | 4K | $18.66 | $68K | 496K |
| 2026-08-17 | FRANCIS LAURA | Chief Executive Officer | Sell | 4K | $18.66 | $73K | 500K |
| 2026-08-17 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 2K | $18.65 | $35K | 274K |
| 2026-08-17 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 2K | $18.62 | $35K | 276K |
| 2026-08-03 | DUNN JEFFREY W | Director | Sell | 20K | $18.46 | $369K | 16K |
| 2026-08-03 | DUNN JEFFREY W | Director | Exercise or conversion | 20K | $4.68 | $94K | 36K |
| 2026-07-02 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 1K | $16.73 | $22K | 277K |
| 2026-07-02 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 34 | $16.86 | $573 | 279K |
| 2026-07-02 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 2K | $16.70 | $30K | 279K |
| 2026-07-02 | Maheshwari Anshul | Chief Financial Officer | Sell | 2K | $16.73 | $26K | 257K |
| 2026-07-02 | Maheshwari Anshul | Chief Financial Officer | Sell | 2K | $16.80 | $30K | 258K |
| 2026-06-05 | DUNN JEFFREY W | Director | Sell | 4K | $15.25 | $55K | 16K |
| 2026-06-04 | West Thomas A. | Director | Grant | 11K | $0.00 | $0 | 38K |
| 2026-06-04 | Nishimura Mika | Director | Grant | 11K | $0.00 | $0 | 44K |
| 2026-06-04 | Freund John Gordon | Director | Grant | 11K | $0.00 | $0 | 54K |
| 2026-06-04 | Davis Timothy E JR | Director | Grant | 11K | $0.00 | $0 | 77K |
| 2026-06-04 | DUNN JEFFREY W | Director | Grant | 11K | $0.00 | $0 | 20K |
| 2026-06-04 | HILLEMAN JERYL L | Director | Grant | 11K | $0.00 | $0 | 44K |
| 2026-05-29 | Davis Timothy E JR | Director | Sell | 4K | $14.14 | $49K | 66K |
| 2026-05-28 | Davis Timothy E JR | Director | Sell | 4K | $14.47 | $55K | 69K |
| 2026-05-28 | Davis Timothy E JR | Director | Exercise or conversion | 12K | $4.32 | $52K | 73K |
| 2026-05-18 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 2K | $14.64 | $27K | 281K |
| 2026-05-18 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 2K | $14.63 | $27K | 281K |
| 2026-05-18 | Maheshwari Anshul | Chief Financial Officer | Sell | 2K | $14.65 | $32K | 260K |
| 2026-05-18 | Maheshwari Anshul | Chief Financial Officer | Sell | 2K | $14.71 | $36K | 261K |
| 2026-05-18 | FRANCIS LAURA | Chief Executive Officer | Sell | 3K | $14.73 | $47K | 503K |
| 2026-05-18 | FRANCIS LAURA | Chief Executive Officer | Sell | 4K | $14.75 | $54K | 533K |
| 2026-05-18 | FRANCIS LAURA | Chief Executive Officer | Sell | 2K | $14.57 | $29K | 536K |
| 2026-05-18 | FRANCIS LAURA | Chief Executive Officer | Sell | 2K | $14.67 | $33K | 538K |
| 2026-05-18 | FRANCIS LAURA | Chief Executive Officer | Sell | 4K | $14.75 | $57K | 540K |
| 2026-05-04 | DUNN JEFFREY W | Director | Sell | 337 | $13.15 | $4K | 9K |
| 2026-04-07 | Hinckley Greg K | Director | Exercise or conversion | 3K | $5.94 | $18K | 105K |
| 2026-04-02 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 34 | $12.61 | $429 | 283K |
| 2026-04-02 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 1K | $12.86 | $17K | 283K |
| 2026-04-02 | Maheshwari Anshul | Chief Financial Officer | Sell | 2K | $12.81 | $20K | 263K |
| 2026-04-02 | Maheshwari Anshul | Chief Financial Officer | Sell | 2K | $12.92 | $23K | 265K |
| 2026-04-01 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 2K | $12.95 | $23K | 284K |
| 2026-03-12 | Nishimura Mika | Director | Sell | 4K | $13.83 | $57K | 33K |
| 2026-02-17 | RECUPERO ANTHONY J | See Remarks | Sell | 3K | $15.45 | $47K | 243K |
| 2026-02-17 | RECUPERO ANTHONY J | See Remarks | Sell | 11K | $15.41 | $172K | 246K |
| 2026-02-17 | RECUPERO ANTHONY J | See Remarks | Sell | 2K | $15.41 | $26K | 258K |
| 2026-02-17 | RECUPERO ANTHONY J | See Remarks | Sell | 3K | $15.42 | $47K | 259K |
| 2026-02-17 | RECUPERO ANTHONY J | See Remarks | Sell | 2K | $15.28 | $32K | 262K |
| 2026-02-17 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 2K | $15.31 | $28K | 286K |
| 2026-02-17 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 12K | $15.34 | $177K | 288K |
| 2026-02-17 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 1K | $15.32 | $23K | 299K |
| 2026-02-17 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 3K | $15.41 | $51K | 301K |
| 2026-02-17 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 3K | $15.39 | $39K | 304K |
| 2026-02-17 | Maheshwari Anshul | Chief Financial Officer | Sell | 4K | $15.41 | $60K | 266K |
| 2026-02-17 | Maheshwari Anshul | Chief Financial Officer | Sell | 3K | $15.46 | $47K | 270K |
| 2026-02-17 | Maheshwari Anshul | Chief Financial Officer | Sell | 2K | $15.29 | $33K | 273K |
| 2026-02-17 | Maheshwari Anshul | Chief Financial Officer | Sell | 11K | $15.36 | $171K | 276K |
| 2026-02-17 | Maheshwari Anshul | Chief Financial Officer | Sell | 1K | $15.35 | $20K | 287K |
| 2026-02-17 | FRANCIS LAURA | Chief Executive Officer | Sell | 2K | $15.30 | $31K | 544K |
| 2026-02-17 | FRANCIS LAURA | Chief Executive Officer | Sell | 8K | $15.44 | $122K | 546K |
| 2026-02-17 | FRANCIS LAURA | Chief Executive Officer | Sell | 2K | $15.29 | $34K | 554K |
| 2026-02-17 | FRANCIS LAURA | Chief Executive Officer | Sell | 3K | $15.31 | $49K | 557K |
| 2026-02-17 | FRANCIS LAURA | Chief Executive Officer | Sell | 40K | $15.29 | $608K | 560K |
| 2026-02-17 | FRANCIS LAURA | Chief Executive Officer | Sell | 19K | $15.32 | $289K | 599K |
| 2026-02-17 | FRANCIS LAURA | Chief Executive Officer | Sell | 4K | $15.29 | $60K | 618K |
| 2026-02-17 | FRANCIS LAURA | Chief Executive Officer | Sell | 16K | $15.35 | $239K | 622K |
| 2026-02-16 | Maheshwari Anshul | Chief Financial Officer | Grant | 13K | $0.00 | $0 | 288K |
| 2026-02-16 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Grant | 10K | $0.00 | $0 | 307K |
| 2026-02-16 | FRANCIS LAURA | Chief Executive Officer | Grant | 57K | $0.00 | $0 | 638K |
| 2026-02-16 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Grant | 10K | $0.00 | $0 | 297K |
| 2026-02-16 | PISETSKY MICHAEL A. | SVP, Ops & Adm/Chief Legal Ofr | Grant | 59K | $0.00 | $0 | 287K |
| 2026-02-16 | Maheshwari Anshul | Chief Financial Officer | Grant | 13K | $0.00 | $0 | 274K |
| 2026-02-16 | Maheshwari Anshul | Chief Financial Officer | Grant | 81K | $0.00 | $0 | 261K |
| 2026-02-16 | FRANCIS LAURA | Chief Executive Officer | Grant | 57K | $0.00 | $0 | 580K |
| 2026-02-16 | FRANCIS LAURA | Chief Executive Officer | Grant | 115K | $0.00 | $0 | 523K |
| 2026-02-02 | DUNN JEFFREY W | Director | Sell | 337 | $16.42 | $6K | 10K |
| 2026-01-08 | DUNN JEFFREY W | Director | Sell | 20K | $21.28 | $426K | 80K |
| 2026-01-02 | RECUPERO ANTHONY J | President, Commercial Ops | Sell | 2K | $19.64 | $34K | 264K |
| 2026-01-02 | RECUPERO ANTHONY J | President, Commercial Ops | Sell | 2K | $19.61 | $38K | 266K |
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. JSON23 Form 144 notices on file for SIBN worth $9.4M at the prices reported; 10 in the last 90 days worth $3.7M. Latest: ANSHUL MAHESHWARI filed on 2026-10-29 to sell 3,738 shares ($82K) from 2026-10-29.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-10-29 | ANSHUL MAHESHWARIOfficer | 4K | $82K | 0.008% | 2026-10-29 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-10-29 | MICHAEL PISETSKY SEPARATE PROPERTY TRUSTOfficer | 30K | $648K | 0.066% | 2026-10-29 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-10-13 | DAVID & LAURA FRANCIS JOINT REV TRU/A DTD 01/03/2003Director, Officer | 38K | $736K | 0.085% | 2026-10-12 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-10-05 | ANSHUL MAHESHWARIOfficer | 2K | $31K | 0.004% | 2026-10-05 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-24 | ANSHUL MAHESHWARIOfficer | 12K | $232K | 0.026% | 2026-08-24 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-24 | DAVID & LAURA FRANCIS JOINT REV TRU/A DTD 01/03/2003Director, Officer | 26K | $518K | 0.058% | 2026-08-24 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-21 | ANSHUL MAHESHWARIOfficer | 11K | $219K | 0.025% | 2026-08-21 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-21 | DAVID & LAURA FRANCIS JOINT REV TRU/A DTD 01/03/2003Director, Officer | 4K | $76K | 0.009% | 2026-08-21 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-20 | DAVID & LAURA FRANCIS JOINT REV TRU/A DTD 01/03/2003Director, Officer | 52K | $1.0M | 0.116% | 2026-08-20 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-19 | ANSHUL MAHESHWARIOfficer | 6K | $110K | 0.013% | 2026-08-19 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-03 | THE JEFFREY W DUNN LIVING TRUST DTD 05/17/2012Director | 80K | $1.4M | 0.180% | 2026-08-03 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-29 | TIMOTHY E DAVIS JRDirector | 4K | $49K | 0.008% | 2026-05-29 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-12 | MIKA NISHIMURADirector | 4K | $57K | 0.009% | 2026-03-12 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-01-08 | The Jeffrey W. Dunn Living TrustDirector | 60K | $1.3M | 0.138% | 2026-01-08 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-01-02 | ANSHUL MAHESHWARIOfficer | 2K | $31K | 0.004% | 2026-01-02 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-08 | The Jeffrey W. Dunn Living TrustDirector | 20K | $394K | 0.046% | 2025-12-08 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-21 | MICHAEL PISETSKY SEPARATE PROPERTY TRUSTOfficer | 20K | $374K | 0.046% | 2025-11-21 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-21 | ANSHUL MAHESHWARIOfficer | 20K | $371K | 0.046% | 2025-11-21 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-18 | DAVID & LAURA FRANCIS JOINT REV TR U/A DTD 01/03/2003Director, Officer | 5K | $97K | 0.012% | 2025-11-18 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-12 | DANIEL WOLFDirector | 14K | $260K | 0.033% | 2025-11-12 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-12 | ANSHUL MAHESHWARIOfficer | 3K | $41K | 0.006% | 2025-11-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-12 | DAVID & LAURA FRANCIS JOINT REV TR U/A DTD 01/03/2003Director, Officer | 5K | $85K | 0.012% | 2025-11-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-12 | The Jeffrey W. Dunn Living TrustDirector | 80K | $1.3M | 0.184% | 2025-11-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON11 holders report 5% or more of SIBN in their latest filing, all on Schedule 13G (passive). The largest reported stake is Mathew P. Arens at 18.4% of the class (8,120,986 shares), filed 2026-05-07 for an event on 2026-04-30.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-14 | 13G | ERIC BANNASCHindividual, parent holding company | 3.3M | 7.5% | 2026-06-30 |
| 2026-08-14 | 13G | Cadian Capital Management, LPinvestment adviser, partnership | 3.3M | 7.5% | 2026-06-30 |
| 2026-08-14 | 13G | Cadian Capital Management GP, LLCother entity, parent holding company | 3.3M | 7.5% | 2026-06-30 |
| 2026-07-30 | 13G/Ano. 7 | BlackRock, Inc.parent holding company | 3.6M | 8.0% | 2026-06-30 |
| 2026-05-07 | 13G/Ano. 1 | Mathew P. Arensindividual | 8.1M | 18.4% | 2026-04-30 |
| 2026-05-07 | 13G/Ano. 1 | First Light Asset Management, LLCinvestment adviser | 8.0M | 18.0% | 2026-04-30 |
| 2026-03-27 | 13G/Ano. 1 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
| 2026-02-17 | 13G/Ano. 6 | OrbiMed Capital LLCinvestment adviser | 0 | 0.0% | 2025-12-31 |
| 2026-02-17 | 13G/Ano. 6 | OrbiMed Advisors LLCinvestment adviser | 0 | 0.0% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 5 | BROWN ADVISORY INCparent holding company | 2.5M | 5.8% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 5 | BROWN ADVISORY LLCinvestment adviser | 2.5M | 5.8% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 5 | BROWN INVESTMENT ADVISORY & TRUST CObank | 10K | 0.0% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 5 | SIGNATURE FINANCIAL MANAGEMENT, INC.investment adviser | 1K | 0.0% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 5 | BROWN ADVISORY LTDinvestment adviser | 342 | 0.0% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 3 | Stowers Institute for Medical Researchparent holding company | 2.3M | 5.3% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 3 | American Century Investment Management, Inc.investment adviser | 2.3M | 5.3% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 3 | American Century Companies, Inc.parent holding company | 2.3M | 5.3% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 3 | American Century Mutual Funds, Inc.investment company | 1.8M | 4.1% | 2025-12-31 |
| 2026-02-12 | 13G | Champlain Investment Partners, LLCinvestment adviser | 2.1M | 4.9% | 2025-09-30 |
13F holders
Tracked managers holding SIBN at their latest 13F. JSON5 of the 30 tracked managers held SIBN at their latest 13F, $26.7M in total at quarter-end prices. Point72 Asset Management is the largest at $12.9M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 1 added shares and 4 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Point72 Asset Management | 2026-06-30 | 790K | $12.9M | 0.01% | -50K |
| Millennium Management | 2026-06-30 | 364K | $5.9M | 0.00% | -5K |
| AQR Capital Management | 2026-06-30 | 254K | $4.1M | 0.00% | +196K |
| D. E. Shaw & Co. | 2026-06-30 | 186K | $3.0M | 0.00% | -3K |
| Renaissance Technologies | 2026-06-30 | 44K | $720K | 0.00% | -429K |
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.
Financials
SEC XBRL, as filed. JSONIn Q2 FY 2026 (quarter ended 2026-06-30) Si-Bone reported revenue of $56.0M, up 15.2% from the same quarter a year earlier, and net loss of $4.1M (-0.09 diluted EPS). In FY 2025 it generated -$675K of operating cash flow. As of 2026-06-30, cash was $33.1M against $35.6M of debt.
- Cash
- $33.1M
- Debt
- $35.6M
- Equity
- $182.3M
- Total assets
- $248.8M
- Shares outstanding
- 44,818,575
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q2 FY 2026 | 2026-06-30 | $56.0M | -$4.1M | -7.3% | -0.09 |
| Q1 FY 2026 | 2026-03-31 | $52.6M | -$4.3M | -8.2% | -0.10 |
| Q4 FY 2025derived | 2025-12-31 | $56.3M | -$1.6M | -2.9% | n/a |
| Q3 FY 2025 | 2025-09-30 | $48.7M | -$4.6M | -9.4% | -0.11 |
| Q2 FY 2025 | 2025-06-30 | $48.6M | -$6.2M | -12.7% | -0.14 |
| Q1 FY 2025 | 2025-03-31 | $47.3M | -$6.5M | -13.8% | -0.15 |
| Q4 FY 2024derived | 2024-12-31 | $49.0M | -$4.5M | -9.2% | n/a |
| Q3 FY 2024 | 2024-09-30 | $40.3M | -$6.6M | -16.3% | -0.16 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | $200.9M | -$18.9M | -$675K | $8.4M | n/a | n/a |
| FY 2024 | 2024-12-31 | $167.2M | -$30.9M | -$12.4M | $10.5M | n/a | n/a |
| FY 2023 | 2023-12-31 | $138.9M | -$43.3M | -$18.7M | $7.8M | n/a | n/a |
| FY 2022 | 2022-12-31 | $106.4M | -$61.3M | -$41.7M | $9.5M | n/a | n/a |
| FY 2021 | 2021-12-31 | $90.2M | -$56.6M | -$39.5M | $6.4M | n/a | n/a |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-07-29 from the cover page.
What this page is
Si-Bone 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 Si-Bone (SIBN), SEC CIK 1459839, listed on Nasdaq, classified by the SEC as surgical & medical instruments & apparatus. 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 2026-10-09.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 2026-10-29.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 2026-08-14.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
- Financials
- SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. 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 2026-11-02.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 2026-10-29.JSON and CSV
- Company record
- EDGAR filing index for CIK 1459839Ticker, 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.
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Datasets
Frequently Asked Questions
How much of SIBN is sold short?
4,704,576 shares were held short at the 2026-10-15 settlement, 8.7 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 SIBN's daily short volume?
On 2026-11-02, 138,214 of the 434,860 SIBN shares reported to FINRA were sold short, 31.8% of the day's reported volume. Short volume is a flow for one day, not a position.
Does SIBN have fails to deliver?
The SEC's latest file shows 1,018 SIBN shares failed to deliver at settlement 2026-10-09. Fails are reported per settlement date and published twice a month with a lag.
Are SIBN insiders buying or selling?
Insiders at SIBN reported 27 open-market sells worth $5.0M in the last 90 days and no open-market buys. Latest filing: Maheshwari Anshul (Chief Op & Financial Officer) on 2026-10-29.
Have SIBN insiders filed to sell?
23 Form 144 notices on file for SIBN worth $9.4M at the prices reported; 10 in the last 90 days worth $3.7M. Latest: ANSHUL MAHESHWARI filed on 2026-10-29 to sell 3,738 shares ($82K) from 2026-10-29.
Who owns 5% or more of SIBN?
11 holders report 5% or more of SIBN in their latest filing, all on Schedule 13G (passive). The largest reported stake is Mathew P. Arens at 18.4% of the class (8,120,986 shares), filed 2026-05-07 for an event on 2026-04-30.
What did SIBN report last quarter?
In Q2 FY 2026 (quarter ended 2026-06-30) Si-Bone reported revenue of $56.0M, up 15.2% from the same quarter a year earlier, and net loss of $4.1M (-0.09 diluted EPS). In FY 2025 it generated -$675K of operating cash flow. As of 2026-06-30, cash was $33.1M against $35.6M of debt.
Which tracked 13F managers own SIBN?
5 of the 30 tracked 13F managers held SIBN shares at their latest filing, $26.7M in all. The largest: Steve Cohen's Point72 Asset Management (790K shares, $12.9M), Izzy Englander's Millennium Management (364K shares, $5.9M), Cliff Asness's AQR Capital Management (254K shares, $4.1M), D. E. Shaw & Co. (186K shares, $3.0M), Renaissance Technologies (44K shares, $720K).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.