XOOMAR

Lensar (LNSR)

Lensar 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 surgical & medical instruments & apparatus.

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307K

Short interest

settlement 2026-10-15

8.1

Days to cover

+1.5 days vs prior

27.0%

Short share of volume

2026-11-03

3

Fails to deliver

settlement 2026-10-09

Thu 5 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. JSON

As of 15 October 2026, short interest in LNSR is 306,972 shares, down 31,255 shares over the last month. Over the last 48 readings it ranged from 43,676 shares (15 November 2024) to 1,016,420 shares (31 March 2026). At the reported average volume of 38K shares a day that is 8.1 days to cover.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-10-15306,972-4.8%38,1208.05
2026-09-30322,414-4.7%49,0776.57
2026-09-15338,227-11.4%79,2404.27
2026-08-31381,943-8.1%127,2633.00
2026-08-14415,434-7.9%279,6021.49
2026-07-31451,087-6.6%37,07112.17
2026-07-15483,171-4.4%43,98210.99
2026-06-30505,438-45.8%185,4222.73
2026-06-15931,678+6.9%41,30322.56
2026-05-29871,803-8.2%46,13118.90
2026-05-15949,471-2.7%66,17214.35
2026-04-30975,906-3.7%79,91612.21
2026-04-151,013,709-0.3%90,49411.20
2026-03-311,016,420+42.2%321,6293.16
2026-03-13714,594-0.4%53,59313.33
2026-02-27717,187+3.2%46,22915.51
2026-02-13695,205-2.4%40,11717.33
2026-01-30712,520-5.9%34,05120.93
2026-01-15757,509+0.6%33,00922.95
2025-12-31752,783-4.7%39,79318.92
2025-12-15789,691+0.7%50,63715.60
2025-11-28784,306+19.6%52,29015.00
2025-11-14655,811+17.4%99,1286.62
2025-10-31558,869-7.5%44,40112.59
2025-10-15604,476-6.6%44,28413.65
2025-09-30647,315+10.6%51,16712.65
2025-09-15585,310-4.5%73,1228.00
2025-08-29613,026+0.9%57,42110.68
2025-08-15607,645+17.8%63,9329.50
2025-07-31515,989+2.4%54,4479.48
2025-07-15504,052+7.0%75,8926.64
2025-06-30470,996+173.1%230,6842.04
2025-06-13172,463+40.7%100,8501.71
2025-05-30122,572+14.0%113,6541.08
2025-05-15107,540-26.9%119,4071.00
2025-04-30147,164-29.5%127,9871.15
2025-04-15208,648+92.9%195,7921.07
2025-03-31108,148-22.0%306,5761.00
2025-03-14138,604+31.9%178,2341.00
2025-02-28105,071+65.9%101,0751.04
2025-02-1463,321+9.7%96,0621.00
2025-01-3157,740-13.9%121,1361.00
2025-01-1567,049+0.7%53,0951.26
2024-12-3166,615+12.2%56,6971.17
2024-12-1359,377+1.7%42,2811.40
2024-11-2958,384+33.7%49,3961.18
2024-11-1543,676-12.2%52,4201.00
2024-10-3149,746-22.6%36,5531.36

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 3 November 2026, the short share of LNSR volume is 27.0%, up 8.3 points over the last five sessions. Over the last 30 readings it ranged from 5.4% (16 October 2026) to 68.6% (23 September 2026). The latest reading is 4.1 points below the 30-session average of 31.0%, on 43K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-11-0312K43K27.0%0
2026-11-0212K28K44.8%0
2026-10-305K13K39.9%0
2026-10-291K7K17.8%0
2026-10-286753K23.1%0
2026-10-273K14K18.7%0
2026-10-263K10K28.4%0
2026-10-236K10K58.4%0
2026-10-2236K134K27.1%0
2026-10-215K12K43.0%0
2026-10-207K28K24.3%0
2026-10-196K43K13.8%0
2026-10-162K31K5.4%132
2026-10-157K18K40.5%0
2026-10-144K12K33.1%0
2026-10-132K9K22.1%0
2026-10-121K13K10.1%0
2026-10-091K4K26.4%0
2026-10-089694K24.0%0
2026-10-073K7K39.6%0
2026-10-067K13K51.3%0
2026-10-057K23K28.9%0
2026-10-0212K38K32.2%0
2026-10-016K14K41.5%0
2026-09-304K10K41.8%0
2026-09-292K10K20.5%0
2026-09-284K17K23.2%0
2026-09-252K11K14.4%0
2026-09-242K6K41.7%0
2026-09-235K8K68.6%0

Fails to deliver

SEC, the last 30 settlement dates with a fail. JSON

As of 9 October 2026, the fails-to-deliver balance in LNSR is 3 shares, down 47 shares over the last settlement date. Over the last 30 readings it ranged from 2 shares (30 April 2026) to 7,031 shares (12 May 2026). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-10-093$6.45$19
2026-08-2150$8.44$422
2026-08-201,191$8.72$10K
2026-08-1812$8.09$97
2026-08-14848$8.27$7K
2026-08-10124$6.04$749
2026-08-045,600$5.38$30K
2026-07-0823$6.13$141
2026-06-293,659$5.63$21K
2026-06-25864$6.06$5K
2026-06-2384$5.66$475
2026-06-221,851$5.74$11K
2026-06-163$5.72$17
2026-06-12221$5.82$1K
2026-06-11147$5.68$835
2026-06-09160$5.60$896
2026-06-041,213$5.74$7K
2026-06-03199$5.74$1K
2026-05-227$5.95$42
2026-05-21464$5.88$3K
2026-05-20359$5.80$2K
2026-05-127,031$5.78$41K
2026-05-11232$5.64$1K
2026-05-08366$5.23$2K
2026-05-04465$5.61$3K
2026-05-01332$5.23$2K
2026-04-302$5.39$11
2026-04-29989$5.35$5K
2026-04-2758$5.09$295
2026-04-214,180$5.55$23K

Insider trades

SEC Form 4, newest first. JSON

No open-market insider trades were reported for LNSR in the last 90 days. The most recent filings are listed below. Latest filing: Wong Kendra (Principal Accounting Officer) on 2026-06-03.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-06-03Wong KendraPrincipal Accounting OfficerGrant13K$0.00$056K
2026-06-03WEISNER AIMEE SDirectorGrant17K$0.00$0110K
2026-06-03O'Farrell Elizabeth G.DirectorGrant17K$0.00$067K
2026-06-03Winer Gary MDirectorGrant17K$0.00$0106K
2026-06-03LINDSTROM RICHARD L MDDirectorGrant17K$0.00$0264K
2026-06-03LINK WILLIAM J PHDDirectorGrant17K$0.00$0568K
2026-06-03HAMMER TODD BDirector, 10% ownerGrant17K$0.00$056K
2026-06-03ELLIS THOMAS BDirector, 10% ownerGrant17K$0.00$056K
2026-06-03Connaughton Alan B.Chief Operating OfficerGrant35K$0.00$0389K
2026-06-03CURTIS NICHOLAS TChief Executive OfficerGrant131K$0.00$01.1M
2026-05-06STAAB THOMAS R IIChief Financial OfficerTax withholding1K$5.38$7K175K
2026-05-06Wong KendraPrincipal Accounting OfficerTax withholding864$5.38$5K43K
2026-05-06Connaughton Alan B.Chief Operating OfficerTax withholding3K$5.38$15K354K
2026-05-06CURTIS NICHOLAS TChief Executive OfficerOther transaction0$0.00$0992K
2026-03-19STAAB THOMAS R IIChief Financial OfficerExercise or conversion6K$2.65$15K176K
2026-02-18STAAB THOMAS R IIChief Financial OfficerTax withholding1K$11.32$12K170K
2026-02-18Connaughton Alan B.Chief Operating OfficerTax withholding2K$11.32$27K357K
2026-02-18CURTIS NICHOLAS TChief Executive OfficerOther transaction0$0.00$0992K
2026-01-11STAAB THOMAS R IIChief Financial OfficerTax withholding2K$11.57$21K172K
2026-01-11Connaughton Alan B.Chief Operating OfficerTax withholding2K$11.57$26K359K
2026-01-11CURTIS NICHOLAS TChief Executive OfficerOther transaction0$0.00$0992K
2025-05-23LINDSTROM RICHARD L MDDirectorGrant7K$0.00$0246K
2025-05-23LINK WILLIAM J PHDDirectorGrant7K$0.00$0551K
2025-05-23Winer Gary MDirectorGrant7K$0.00$088K
2025-05-23O'Farrell Elizabeth G.DirectorGrant7K$0.00$050K
2025-05-23WEISNER AIMEE SDirectorGrant7K$0.00$093K
2025-05-23HAMMER TODD BDirector,TenPercentOwnerGrant7K$0.00$039K
2025-05-23ELLIS THOMAS BDirector,TenPercentOwnerGrant7K$0.00$039K
2025-02-18CURTIS NICHOLAS TChief Executive OfficerGrant128K$0.00$0992K
2025-02-18Wong KendraPrincipal Accounting OfficerGrant6K$0.00$042K
2025-02-18STAAB THOMAS R IIChief Financial OfficerGrant13K$0.00$0173K
2025-02-18Connaughton Alan B.Chief Operating OfficerGrant37K$0.00$0362K
2025-01-11STAAB THOMAS R IIChief Financial OfficerTax withholding2K$8.25$15K161K
2025-01-11Wong KendraPrincipal Accounting OfficerTax withholding1K$8.25$9K36K
2024-09-03Winer Gary MDirectorBuy685$4.50$3K81K
2024-08-28Winer Gary MDirectorBuy1K$4.45$4K80K
2024-08-27Winer Gary MDirectorBuy500$4.50$2K79K
2024-08-26Winer Gary MDirectorBuy802$4.58$4K79K
2024-08-22Winer Gary MDirectorBuy2$4.30$978K
2024-08-21Winer Gary MDirectorBuy500$4.35$2K78K
2024-08-20Winer Gary MDirectorBuy500$4.20$2K77K
2024-08-16Winer Gary MDirectorBuy6$4.03$2477K
2024-08-14Winer Gary MDirectorBuy1K$4.20$4K77K
2024-08-12Winer Gary MDirectorBuy500$4.03$2K76K
2024-08-08STAAB THOMAS R IIChief Financial OfficerExercise or conversion4K$2.65$9K162K
2024-05-07HAMMER TODD BDirector,TenPercentOwnerGrant22K$0.00$031K
2024-05-07ELLIS THOMAS BDirector,TenPercentOwnerGrant22K$0.00$031K
2024-05-07WEISNER AIMEE SDirectorGrant22K$0.00$086K
2024-05-07LINK WILLIAM J PHDDirectorGrant22K$0.00$0543K
2024-05-07Winer Gary MDirectorGrant22K$0.00$075K
2024-05-07O'Farrell Elizabeth G.DirectorGrant22K$0.00$043K
2024-05-07LINDSTROM RICHARD L MDDirectorGrant22K$0.00$0239K
2024-05-06CURTIS NICHOLAS TChief Executive OfficerGrant71K$0.00$0864K
2024-05-06Wong KendraPrincipal Accounting OfficerGrant14K$0.00$036K
2024-05-06STAAB THOMAS R IIChief Financial OfficerGrant19K$0.00$0159K
2024-05-06Connaughton Alan B.Chief Operating OfficerGrant45K$0.00$0324K
2024-01-11STAAB THOMAS R IIChief Financial OfficerTax withholding2K$4.43$8K140K
2024-01-11Connaughton Alan B.Chief Operating OfficerTax withholding2K$4.43$10K279K
2023-11-22Winer Gary MDirectorBuy300$2.10$63053K
2023-11-16Winer Gary MDirectorBuy1K$2.13$2K53K
2023-11-15Winer Gary MDirectorBuy500$2.15$1K52K
2023-11-10Winer Gary MDirectorBuy1K$2.14$2K52K
2023-08-11Winer Gary MDirectorBuy705$3.60$3K51K
2023-08-10Winer Gary MDirectorBuy1K$3.66$4K50K
2023-05-25WEISNER AIMEE SDirectorGrant9K$0.00$064K
2023-05-25LINDSTROM RICHARD L MDDirectorGrant9K$0.00$0217K
2023-05-25Winer Gary MDirectorGrant9K$0.00$049K
2023-05-25LINK WILLIAM J PHDDirectorGrant9K$0.00$0521K
2023-05-25O'Farrell Elizabeth G.DirectorGrant9K$0.00$021K
2023-05-25MCLAUGHLIN JOHN PETERDirectorGrant9K$0.00$054K
2023-05-25ELLIS THOMAS BDirector,TenPercentOwnerGrant9K$0.00$09K
2023-05-25HAMMER TODD BDirector,TenPercentOwnerGrant9K$0.00$09K
2023-05-22WEISNER AIMEE SDirectorBuy17K$2.75$46K54K
2023-05-19WEISNER AIMEE SDirectorBuy22K$2.59$57K38K
2023-05-18WEISNER AIMEE SDirectorBuy8K$2.61$20K15K
2023-05-17WEISNER AIMEE SDirectorBuy4K$2.29$8K8K
2023-01-11Wong KendraPrincipal Accounting OfficerGrant8K$0.00$021K
2023-01-11CURTIS NICHOLAS TChief Executive OfficerGrant22K$0.00$0793K
2023-01-11Connaughton Alan B.Chief Operating OfficerGrant16K$0.00$0282K
2023-01-11STAAB THOMAS R IIChief Financial OfficerGrant7K$0.00$0142K
2022-12-07STAAB THOMAS R IIChief Financial OfficerBuy727$3.16$2K135K
2022-12-06STAAB THOMAS R IIChief Financial OfficerBuy2K$3.16$6K134K
2022-11-23Winer Gary MDirectorBuy976$3.60$4K40K
2022-11-22Winer Gary MDirectorBuy2K$3.60$5K39K
2022-11-17Winer Gary MDirectorBuy2K$4.10$6K37K
2022-11-16Winer Gary MDirectorBuy1K$4.25$4K36K
2022-08-18Winer Gary MDirectorBuy2K$6.00$12K35K
2022-08-17Winer Gary MDirectorBuy1K$6.15$6K31K
2022-08-17Winer Gary MDirectorBuy2K$6.00$12K33K
2022-05-25LINDSTROM RICHARD L MDDirectorGrant4K$0.00$0208K
2022-05-25WEISNER AIMEE SDirectorGrant4K$0.00$04K
2022-05-25Winer Gary MDirectorGrant4K$0.00$030K
2022-05-25O'Farrell Elizabeth G.DirectorGrant4K$0.00$011K
2022-05-25MCLAUGHLIN JOHN PETERDirectorGrant4K$0.00$044K
2022-05-25LINK WILLIAM J PHDDirectorGrant4K$0.00$0512K
2022-01-11Connaughton Alan B.Chief Operating OfficerGrant15K$0.00$0266K
2022-01-11CURTIS NICHOLAS TChief Executive OfficerGrant30K$0.00$0771K
2022-01-11STAAB THOMAS R IIChief Financial OfficerGrant15K$0.00$0131K
2020-12-07LINDSTROM RICHARD L MDDirectorGrant32K$0.00$0203K
2020-12-07CURTIS NICHOLAS TChief Executive OfficerGrant117K$0.00$0732K

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. JSON

1 Form 144 notice on file for LNSR worth $5K at the prices reported; 0 in the last 90 days worth $0. Latest: STAAB THOMAS R II filed on 2026-05-12 to sell 850 shares ($5K) from 2026-05-12.

FiledSellerSharesMarket valueOf outstandingSale fromBroker
2026-05-12STAAB THOMAS R IIOfficer850$5K0.007%2026-05-12Charles Schwab Corp.

Large holders (13D and 13G)

One row per reporting person with its latest filing, newest first. JSON

1 holder reports 5% or more of LNSR in its latest filing, on Schedule 13G (passive). The holder is BRANDES INVESTMENT PARTNERS, LP at 8.5% of the class (1,026,018 shares), filed 2026-05-14 for an event on 2025-09-30.

FiledFormHolderSharesOf classEvent
2026-07-2913G/Ano. 1BlackRock, Inc.parent holding company184K1.5%2026-06-30
2026-05-1413G/Ano. 1BRANDES INVESTMENT PARTNERS, LPinvestment adviser, partnership1.0M8.5%2025-09-30

13F holders

Tracked managers holding LNSR at their latest 13F. JSON

2 of the 30 tracked managers held LNSR at their latest 13F, $893K in total at quarter-end prices. Millennium Management is the largest at $689K (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 0 cut.

FundQuarterSharesValueOf portfolioChange in shares
Millennium Management2026-06-30121K$689K0.00%+108K
Citadel Advisors2026-06-3036K$204K0.00%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

Lensar 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 Lensar (LNSR), SEC CIK 1320350, 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 2026-11-03.JSON and CSV
Fails to deliver
SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-10-09.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 2026-05-12.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 2026-07-29.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 2026-08-13.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 2026-06-03.JSON and CSV
Company record
EDGAR filing index for CIK 1320350Ticker, 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.

Datasets

Frequently Asked Questions

How much of LNSR is sold short?
306,972 shares were held short at the 2026-10-15 settlement, 8.1 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 LNSR's daily short volume?
On 2026-11-03, 11,562 of the 42,838 LNSR shares reported to FINRA were sold short, 27.0% of the day's reported volume. Short volume is a flow for one day, not a position.
Does LNSR have fails to deliver?
The SEC's latest file shows 3 LNSR shares failed to deliver at settlement 2026-10-09. Fails are reported per settlement date and published twice a month with a lag.
Are LNSR insiders buying or selling?
No open-market insider trades were reported for LNSR in the last 90 days. The most recent filings are listed below. Latest filing: Wong Kendra (Principal Accounting Officer) on 2026-06-03.
Have LNSR insiders filed to sell?
1 Form 144 notice on file for LNSR worth $5K at the prices reported; 0 in the last 90 days worth $0. Latest: STAAB THOMAS R II filed on 2026-05-12 to sell 850 shares ($5K) from 2026-05-12.
Who owns 5% or more of LNSR?
1 holder reports 5% or more of LNSR in its latest filing, on Schedule 13G (passive). The holder is BRANDES INVESTMENT PARTNERS, LP at 8.5% of the class (1,026,018 shares), filed 2026-05-14 for an event on 2025-09-30.
Which tracked 13F managers own LNSR?
2 of the 30 tracked 13F managers held LNSR shares at their latest filing, $893K in all. The largest: Izzy Englander's Millennium Management (121K shares, $689K), Ken Griffin's Citadel Advisors (36K shares, $204K).

Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.