XOOMAR

PubMatic, Inc. (PUBM)

Every FINRA and SEC series the site collects for PubMatic, Inc.: short interest with days to cover, daily short sale volume, fails to deliver and Form 4 insider trades. Listed on Nasdaq, classified by the SEC as services-computer programming, data processing, etc..

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2.1M

Short interest

settlement 2026-08-14

2.0

Days to cover

-7.9% vs prior

44.4%

Short share of volume

2026-09-11

15,526

Fails to deliver

settlement 2026-08-14

-$1.6M

Insider flow, 90 days

0 buys, 6 sells

As of 2026-09-11.

Short interest

FINRA, twice a month; the last 12 months shown, all 48 settlements in the JSON

As of 14 August 2026, short interest in PUBM is 2,070,275 shares, down 874,521 shares over the last month. Over the last 48 readings it ranged from 947,464 shares (14 February 2025) to 2,996,126 shares (30 June 2026). At the reported average volume of 1.1M shares a day that is 2.0 days to cover.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-08-142,070,275-7.9%1,052,0861.97
2026-07-312,247,700-23.7%427,6425.26
2026-07-152,944,796-1.7%437,1106.74
2026-06-302,996,126+7.9%636,6874.71
2026-06-152,775,994+7.7%607,6234.57
2026-05-292,578,479+1.6%708,5673.64
2026-05-152,537,789+15.2%862,7792.94
2026-04-302,202,583+15.3%570,9443.86
2026-04-151,911,135-0.4%619,9983.08
2026-03-311,919,181+13.1%691,9512.77
2026-03-131,697,064-5.7%977,0541.74
2026-02-271,799,363-2.8%815,8762.21
2026-02-131,850,905+12.2%804,0052.30
2026-01-301,649,483-7.1%521,6093.16
2026-01-151,775,623-8.7%526,8703.37
2025-12-311,944,568-10.7%426,2804.56
2025-12-152,176,599-11.4%581,9253.74
2025-11-282,456,141-10.2%719,3623.41
2025-11-142,733,656+12.8%1,651,9931.65
2025-10-312,422,828+4.4%517,9134.68
2025-10-152,320,369+12.2%731,3013.17
2025-09-302,068,816+11.3%528,3343.92
2025-09-151,859,486+6.6%523,2883.55
2025-08-291,744,047-7.3%696,2152.51

Daily short volume

FINRA Reg SHO, last 60 sessions. JSON

As of 11 September 2026, the short share of PUBM volume is 44.4%, down 27.0 points over the last five sessions. Over the last 52 readings it ranged from 27.9% (12 August 2026) to 71.4% (3 September 2026). The latest reading is 4.7 points below the 30-session average of 49.1%, on 309K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-09-11137K309K44.4%0
2026-09-1042K72K58.1%0
2026-09-0978K147K52.8%6
2026-09-08110K228K48.4%438
2026-09-0446K127K36.3%0
2026-09-03208K292K71.4%78,140
2026-09-02268K416K64.4%1
2026-09-0196K162K59.3%900
2026-08-3176K127K59.7%0
2026-08-28134K275K48.7%1,760
2026-08-2789K160K55.6%0
2026-08-2677K164K46.8%0
2026-08-2599K148K67.2%0
2026-08-2488K144K61.4%241
2026-08-21130K198K65.6%0
2026-08-20131K255K51.3%0
2026-08-1989K230K38.6%0
2026-08-18110K322K34.3%0
2026-08-17150K301K49.9%0
2026-08-14117K246K47.5%0
2026-08-13186K419K44.5%6,301
2026-08-1275K267K27.9%0
2026-08-11108K370K29.1%0
2026-08-10254K765K33.2%18,978
2026-08-07569K1.3M43.4%23,100
2026-08-06122K248K49.0%100
2026-08-0588K195K45.0%0
2026-08-0470K181K38.9%0
2026-08-0385K145K58.5%264
2026-07-3159K146K40.5%1

Fails to deliver

SEC, by settlement date. JSON

As of 14 August 2026, the fails-to-deliver balance in PUBM is 15,526 shares, up 15,511 shares over the last settlement date. Over the last 34 readings it ranged from 1 share (9 July 2026) to 79,614 shares (25 November 2025).

SettlementShares failedPriceValue
2026-08-1415,526$17.28$268K
2026-07-2815$12.79$192
2026-07-20666$12.73$8K
2026-07-1631$13.80$428
2026-07-091$13.16$13
2026-07-0812$13.32$160
2026-07-025$13.83$69
2026-07-01196$13.12$3K
2026-06-30370$13.07$5K
2026-06-29199$12.65$3K
2026-06-251,351$11.92$16K
2026-06-22500$11.30$6K
2026-06-1544$11.35$499
2026-06-041,032$11.38$12K
2026-06-0353$12.04$638
2026-06-02575$12.22$7K
2026-04-30267$9.72$3K
2026-03-23600$7.99$5K
2026-03-184$8.17$33
2026-03-02620$8.10$5K
2026-02-24330$6.30$2K
2026-02-03279$7.20$2K
2026-02-02279$7.26$2K
2026-01-217,308$7.54$55K
2026-01-0512,088$8.59$104K
2025-12-3117$8.96$152
2025-12-22200$8.83$2K
2025-12-16280$8.67$2K
2025-12-052,361$9.10$21K
2025-11-2579,614$8.66$689K

Insider trades

SEC Form 4, newest first, 50 of 96 shown. JSON

Insiders at PUBM reported 6 open-market sells worth $1.6M in the last 90 days and no open-market buys. Sells alone are a weak signal; insiders sell for tax, diversification and estate reasons all the time. Latest filing: Gimbel Lisa (CHIEF ACCOUNTING OFFICER) on 2026-09-01.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-09-01Gimbel LisaCHIEF ACCOUNTING OFFICERSell500$16.43$8K16K
2026-08-17Kumar MukulPRESIDENT, ENGINEERINGSell8K$17.05$136K113K
2026-08-17Kumar MukulPRESIDENT, ENGINEERINGConversion8K$0.00$0121K
2026-08-15Gimbel LisaCHIEF ACCOUNTING OFFICEROption exercise794$0.00$018K
2026-08-15Gimbel LisaCHIEF ACCOUNTING OFFICEROption exercise801$0.00$018K
2026-08-15Gimbel LisaCHIEF ACCOUNTING OFFICEROption exercise772$0.00$017K
2026-08-15Gimbel LisaCHIEF ACCOUNTING OFFICEROption exercise1K$0.00$016K
2026-08-13Pantelick StevenCHIEF FINANCIAL OFFICERSell20K$17.31$341K10K
2026-08-12Pantelick StevenCHIEF FINANCIAL OFFICERSell22K$17.25$383K30K
2026-08-12Gimbel LisaCHIEF ACCOUNTING OFFICERSell500$17.50$9K15K
2026-08-10Woods AndrewGENERAL COUNSEL &amp; SECRETARYSell38K$17.96$688K40K
2026-06-02Kumar MukulPRESIDENT, ENGINEERINGSell8K$11.96$96K101K
2026-06-02Kumar MukulPRESIDENT, ENGINEERINGConversion8K$0.00$0109K
2026-05-31Shulman Yakov (Jacob)n/aOption exercise10K$0.00$018K
2026-05-31Glaser Shelaghn/aOption exercise13K$0.00$022K
2026-05-18Gimbel LisaCHIEF ACCOUNTING OFFICERSell1K$17.04$24K17K
2026-05-18Gimbel LisaCHIEF ACCOUNTING OFFICERSell3K$9.89$28K14K
2026-05-15Gimbel LisaCHIEF ACCOUNTING OFFICEROption exercise795$0.00$017K
2026-05-15Gimbel LisaCHIEF ACCOUNTING OFFICEROption exercise802$0.00$016K
2026-05-15Gimbel LisaCHIEF ACCOUNTING OFFICEROption exercise773$0.00$015K
2026-05-15Gimbel LisaCHIEF ACCOUNTING OFFICEROption exercise1K$0.00$014K
2026-04-06Pantelick StevenCHIEF FINANCIAL OFFICERSell16K$8.44$137K41K
2026-04-06Klimenko PaulinaCHIEF GROWTH OFFICERSell12K$8.44$99K61K
2026-04-02Woods AndrewGENERAL COUNSEL &amp; SECRETARYSell6K$8.17$47K70K
2026-04-02Pantelick StevenCHIEF FINANCIAL OFFICERSell17K$8.17$137K58K
2026-04-02Kumar MukulPRESIDENT, ENGINEERINGSell8K$8.17$64K99K
2026-04-02Klimenko PaulinaCHIEF GROWTH OFFICERSell12K$8.17$99K73K
2026-04-02Goel Rajeev K.CHIEF EXECUTIVE OFFICERSell50K$8.17$408K48K
2026-04-02Goel Amar K.CHAIRMAN, CHIEF INNOVATION OFFSell7K$8.17$53K24K
2026-04-01Woods AndrewGENERAL COUNSEL &amp; SECRETARYOption exercise16K$0.00$076K
2026-04-01Pantelick StevenCHIEF FINANCIAL OFFICEROption exercise46K$0.00$074K
2026-04-01Kumar MukulPRESIDENT, ENGINEERINGOption exercise20K$0.00$0107K
2026-04-01Klimenko PaulinaCHIEF GROWTH OFFICEROption exercise34K$0.00$085K
2026-04-01Goel Rajeev K.CHIEF EXECUTIVE OFFICEROption exercise98K$0.00$098K
2026-04-01Goel Amar K.CHAIRMAN, CHIEF INNOVATION OFFOption exercise18K$0.00$031K
2026-02-17Gimbel LisaCHIEF ACCOUNTING OFFICERSell1K$6.29$8K13K
2026-02-15Gimbel LisaCHIEF ACCOUNTING OFFICEROption exercise801$0.00$014K
2026-02-15Gimbel LisaCHIEF ACCOUNTING OFFICEROption exercise773$0.00$013K
2026-02-15Gimbel LisaCHIEF ACCOUNTING OFFICEROption exercise1K$0.00$012K
2026-01-30Goel Rajeev K.CHIEF EXECUTIVE OFFICERSell22K$7.32$158K21K
2026-01-29Goel Rajeev K.CHIEF EXECUTIVE OFFICEROption exercise42K$0.00$042K
2026-01-06Klimenko PaulinaCHIEF GROWTH OFFICERSell12K$8.73$108K52K
2026-01-06Goel Amar K.CHAIRMAN, CHIEF INNOVATION OFFSell7K$8.73$63K12K
2026-01-05Pantelick StevenCHIEF FINANCIAL OFFICERSell18K$8.81$162K29K
2026-01-02Woods AndrewGENERAL COUNSEL &amp; SECRETARYSell5K$8.61$42K60K
2026-01-02Pantelick StevenCHIEF FINANCIAL OFFICERSell13K$8.61$108K47K
2026-01-02Klimenko PaulinaCHIEF GROWTH OFFICERSell9K$8.61$78K64K
2026-01-02Goel Rajeev K.CHIEF EXECUTIVE OFFICERSell25K$8.61$218K40K
2026-01-02Goel Amar K.CHAIRMAN, CHIEF INNOVATION OFFSell5K$8.61$45K20K
2026-01-01Woods AndrewGENERAL COUNSEL &amp; SECRETARYOption exercise11K$0.00$065K

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 the rarer, stronger signal.

Planned sales (Form 144)

Newest first. JSON

13 Form 144 notices on file for PUBM worth $7.1M at the prices reported; 13 in the last 90 days worth $7.1M. Latest: AMAR GOEL filed on 2026-09-03 to sell 6,250 shares ($109K) from 2026-09-03.

FiledSellerSharesMarket valueOf outstandingSale fromBroker
2026-09-03AMAR GOELDirector, Officer, 10% Stockholder6K$109K0.017%2026-09-03Morgan Stanley Smith Barney LLC Executive Financial Services
2026-08-26PAULINA KLIMENKODirector31K$508K0.083%2026-08-26Morgan Stanley Smith Barney LLC Executive Financial Services
2026-08-20RAJEEV GOELDirector, Officer, 10% Stockholder50K$839K0.134%2026-08-20Morgan Stanley Smith Barney LLC Executive Financial Services
2026-08-13STEVE M PANTELICKOfficer20K$341K0.053%2026-08-13Morgan Stanley Smith Barney LLC Executive Financial Services
2026-08-12STEVE PANTELICKOfficer22K$392K0.060%2026-08-12Morgan Stanley Smith Barney LLC Executive Financial Services
2026-08-12PAULINA KLIMENKODirector40K$688K0.107%2026-08-12Morgan Stanley Smith Barney LLC Executive Financial Services
2026-08-12LISA GIMBELOfficer2K$35K0.005%2026-08-12Morgan Stanley Smith Barney LLC Executive Financial Services
2026-08-07ANDREW WOODSOfficer38K$517K0.103%2026-08-07Morgan Stanley Smith Barney LLC Executive Financial Services
2026-08-07RAJEEV GOELDirector, Officer, 10% Stockholder211K$2.8M0.566%2026-08-07Morgan Stanley Smith Barney LLC Executive Financial Services
2026-07-23RAJEEV GOELDirector, Officer, 10% Stockholder50K$632K0.131%2026-07-23Morgan Stanley Smith Barney LLC Executive Financial Services
2026-07-16ANDREW WOODSOfficer4K$51K0.010%2026-07-16Morgan Stanley Smith Barney LLC Executive Financial Services
2026-07-16RAJEEV GOELDirector, Officer, 10% Stockholder9K$124K0.023%2026-07-16Morgan Stanley Smith Barney LLC Executive Financial Services
2026-07-15RAJEEV GOELDirector, Officer, 10% Stockholder4K$56K0.011%2026-07-15Morgan Stanley Smith Barney LLC Executive Financial Services

13F holders

Tracked managers holding PUBM at their latest 13F. JSON

7 of the 30 tracked managers held PUBM at their latest 13F, $42.0M in total at quarter-end prices. Renaissance Technologies is the largest at $18.6M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 3 cut.

FundQuarterSharesValueOf portfolioChange in shares
Renaissance Technologies2026-06-301.4M$18.6M0.03%-119K
Citadel Advisors2026-06-30645K$8.5M0.00%+164K
Two Sigma Investments2026-06-30638K$8.4M0.01%+104K
AQR Capital Management2026-06-30286K$3.8M0.00%+161K
Millennium Management2026-06-3086K$1.1M0.00%-6K
Point72 Asset Management2026-06-3079K$1.0M0.00%+57K
D. E. Shaw & Co.2026-06-3044K$581K0.00%-401K

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. JSON

In Q2 2026 (quarter ended 2026-06-30) PubMatic, Inc. reported revenue of $78.6M, up 10.5% from the same quarter a year earlier, and net loss of $1.2M (-0.03 diluted EPS). In FY 2025 it generated $81.1M of operating cash flow and spent $46.5M on buybacks.

Cash
$120.0M
Equity
$238.7M
Total assets
$700.0M

Quarterly, last 8 quarters

QuarterPeriod endRevenueNet incomeMarginDiluted EPS
Q2 20262026-06-30$78.6M-$1.2M-1.5%-0.03
Q1 20262026-03-31$62.6M-$12.5M-20.0%-0.27
Q4 2025derived2025-12-31$80.0Mn/an/an/a
Q3 20252025-09-30$68.0M-$6.5M-9.5%-0.14
Q2 20252025-06-30$71.1M-$5.2M-7.3%-0.11
Q1 20252025-03-31$63.8M-$9.5M-14.9%-0.20
Q4 2024derived2024-12-31$85.5Mn/an/an/a
Q3 20242024-09-30$71.8M-$912K-1.3%-0.02

Fiscal years, with buybacks and dividends

Fiscal yearEndsRevenueNet incomeOperating cash flowCapexBuybacksDividends
FY 20252025-12-31$282.9Mn/a$81.1M$14.3M$46.5Mn/a
FY 20242024-12-31$291.3Mn/a$73.4M$17.6M$75.3Mn/a
FY 20232023-12-31$267.0Mn/a$81.1M$10.6M$59.3Mn/a
FY 20222022-12-31$256.4Mn/a$87.2M$35.9M$0n/a
FY 20212021-12-31$226.9Mn/a$88.7M$30.4M$52Kn/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 cash paid to repurchase common stock in the year (XBRL PaymentsForRepurchaseOfCommonStock), not authorizations. Balance sheet lines are as of 2026-06-30.

What this page is

PubMatic, Inc. 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 pulls every series the site collects for one ticker onto one URL, keyed by the SEC's own ticker list, 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 summary sentence built from the rows (last value, change, range with dates) and its own JSON and CSV links. Nothing on the page is written by a model; the sentences change only when the data does. A page exists only for companies with data in at least two series, and every section says when its source last updated.

This page follows PubMatic, Inc. (PUBM), SEC CIK 1422930, listed on Nasdaq, classified by the SEC as services-computer programming, data processing, etc.. The cross-market tables live on the short interest and insider transactions hubs.

Source and method

Short interest
FINRA consolidated short interestTwice a month, about eight business days after settlement. Latest 2026-08-14.JSON and CSV
Daily short volume
FINRA Reg SHO daily filesEvery trading day, loaded the following morning. Latest 2026-09-11.JSON and CSV
Fails to deliver
SEC fails-to-deliver dataTwice a month, a few weeks after the half month ends. Latest 2026-08-14.JSON and CSV
Planned sales
SEC EDGAR Form 144EDGAR read every 30 minutes; a notice is filed on or before the sell order. Latest 2026-09-03.JSON and CSV
13F holders
SEC EDGAR Form 13F-HRQuarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
Financials
SEC XBRL company factsRefreshed weekly from the SEC's structured data; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
Insider trades
SEC EDGAR Form 4EDGAR read every 30 minutes; filings are due two business days after the trade. Latest 2026-09-01.JSON and CSV
Company record
EDGAR filing index for CIK 1422930Ticker, name and exchange from the SEC's company list, refreshed weekly.
Rate limits
30 requests a minute without a key, 120 a minute with a key from a free account.

Data checks. Every dataset is checked against its source once a day. This dataset passed the last run, 13 Sep 05:40 UTC.

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 crowded short are the combination that has historically preceded squeezes; insider sells next to a crowded short 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 PUBM is sold short?
2,070,275 shares were held short at the 2026-08-14 settlement, 2.0 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 PUBM's daily short volume?
On 2026-09-11, 136,897 of the 308,547 PUBM shares reported to FINRA were sold short, 44.4% of the day's reported volume. Short volume is a flow for one day, not a position.
Does PUBM have fails to deliver?
The SEC's latest file shows 15,526 PUBM shares failed to deliver at settlement 2026-08-14. Fails are reported per settlement date and published twice a month with a lag.
Are PUBM insiders buying or selling?
Insiders at PUBM reported 6 open-market sells worth $1.6M in the last 90 days and no open-market buys. Sells alone are a weak signal; insiders sell for tax, diversification and estate reasons all the time. Latest filing: Gimbel Lisa (CHIEF ACCOUNTING OFFICER) on 2026-09-01.
Have PUBM insiders filed to sell?
13 Form 144 notices on file for PUBM worth $7.1M at the prices reported; 13 in the last 90 days worth $7.1M. Latest: AMAR GOEL filed on 2026-09-03 to sell 6,250 shares ($109K) from 2026-09-03.
What did PUBM report last quarter?
In Q2 2026 (quarter ended 2026-06-30) PubMatic, Inc. reported revenue of $78.6M, up 10.5% from the same quarter a year earlier, and net loss of $1.2M (-0.03 diluted EPS). In FY 2025 it generated $81.1M of operating cash flow and spent $46.5M on buybacks.
Which funds hold PUBM?
7 of the 30 tracked managers held PUBM at their latest 13F, $42.0M in total at quarter-end prices. Renaissance Technologies is the largest at $18.6M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 3 cut.

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