Groowe Groowe BETA / Newsroom
⏱ News is delayed by 15 minutes. Sign in for real-time access. Sign in

Form 8-K

sec.gov

8-K — Kinsale Capital Group, Inc.

Accession: 0001669162-26-000039

Filed: 2026-07-23

Period: 2026-07-23

CIK: 0001669162

SIC: 6331 (FIRE, MARINE & CASUALTY INSURANCE)

Item: Results of Operations and Financial Condition

Item: Financial Statements and Exhibits

Documents

8-K — knsl-20260723.htm (Primary)

EX-99.1 (earningsrelease2q2026.htm)

GRAPHIC (kinsalecapitalgrouplogo.jpg)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K

8-K (Primary)

Filename: knsl-20260723.htm · Sequence: 1

knsl-20260723

0001669162false00016691622026-07-232026-07-23

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934

Date of report (Date of earliest event reported): July 23, 2026

KINSALE CAPITAL GROUP, INC.

(Exact name of registrant as specified in its charter)

Delaware

001-37848 98-0664337

(State or other jurisdiction

of incorporation)

(Commission File Number)

(IRS Employer Identification No.)

2025 Staples Mill Road

Richmond, Virginia 23230

(Address of principal executive offices, including zip code)

(804) 289-1300

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s) Name of each exchange on which registered

Common Stock, par value $0.01 per share KNSL New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02     Results of Operations and Financial Condition.

On July 23, 2026, Kinsale Capital Group, Inc. (the “Company”) issued a press release announcing its financial results for the three and six months ended June 30, 2026. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

Item 9.01    Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No. Description

99.1

Press Release of the Company dated July 23, 2026

104 Cover Page Interactive Data File - the cover page XBRL tags are embedded within the Inline XBRL document

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Kinsale Capital Group, Inc.

Dated: July 23, 2026

By: /s/ Bryan P. Petrucelli

Bryan P. Petrucelli

Executive Vice President, Chief Financial Officer and Treasurer

EX-99.1

EX-99.1

Filename: earningsrelease2q2026.htm · Sequence: 2

Document

Exhibit 99.1

Kinsale Capital Group Reports Second Quarter 2026 Results

Richmond, VA, July 23, 2026 - Kinsale Capital Group, Inc. (NYSE: KNSL) reported net income of $175.9 million, $7.72 per diluted share, for the second quarter of 2026 compared to $134.1 million, $5.76 per diluted share, for the second quarter of 2025. Net income was $288.4 million, $12.58 per diluted share, for the first half of 2026 compared to $223.3 million, $9.59 per diluted share, for the first half of 2025. Net income included after-tax catastrophe losses of $4.2 million in the second quarter of 2026 and $2.9 million in the second quarter of 2025. Net income included after-tax catastrophe losses of $5.5 million in the first half of 2026 and $20.8 million in the first half of 2025.

Net operating earnings(1) were $126.2 million, $5.54 per diluted share, for the second quarter of 2026 compared to $111.4 million, $4.78 per diluted share, for the second quarter of 2025. Net operating earnings(1) were $244.0 million, $10.64 per diluted share, for the first half of 2026 compared to $197.8 million, $8.49 per diluted share, for the first half of 2025.

Three Months Ended June 30,

2026 2025 % Change

Diluted earnings per share $ 7.72  $ 5.76  34.0  %

Diluted operating earnings per share(1)

$ 5.54  $ 4.78  15.9  %

Six Months Ended June 30,

2026 2025 % Change

Diluted earnings per share $ 12.58  $ 9.59  31.2  %

Diluted operating earnings per share(1)

$ 10.64  $ 8.49  25.3  %

Highlights for the quarter included:

•Gross written premiums decreased by 5.0% to $527.6 million, and net written premiums decreased by 1.4% to $452.5 million

•Net earned premiums increased by 8.9% to $417.6 million

•Net investment income increased by 19.9% to $55.7 million

•Underwriting income(2) was $105.4 million, resulting in a combined ratio(5) of 75.5%

•Annualized return on equity(6) was 28.9% for the six months ended June 30, 2026

•Annualized operating return on equity(7) was 24.4% for the six months ended June 30, 2026

"We delivered another quarter of exceptional financial results," said Chairman, President and Chief Executive Officer, Michael P. Kehoe. "Our business continues to generate consistent and growing underwriting profits and investment income. We are generating significant operating cash flows resulting in excess capital and are pleased to report an additional share repurchase authorization of $250 million. Our focus remains on delivering sustainable long-term value creation for stockholders as we execute our strategy of disciplined underwriting and technology-enabled low costs."

1

Results of Operations

Underwriting Results

Gross written premiums were $527.6 million for the second quarter of 2026 compared to $555.5 million for the second quarter of 2025, a decrease of 5.0%. Gross written premiums were $1,009.6 million for the first half of 2026 compared to $1,039.8 million for the first half of 2025, a decrease of 2.9%. The decrease in gross written premiums was primarily due to heightened competition in the Commercial Property Division where premiums declined 32.7% and 30.9% in the second quarter and first half of 2026, respectively. Excluding the Commercial Property Division, gross written premiums increased 3.7% for the second quarter of 2026 and 4.8% for the first half of 2026 compared to the prior-year periods, reflecting continued strong submission flow across most divisions and an increase in bound accounts offset in part by lower average premium per policy as a result of heightened competition.

Underwriting income(2) was $105.4 million, resulting in a combined ratio(5) of 75.5% for the second quarter of 2026, compared to $95.5 million and a combined ratio(5) of 75.8% for the second quarter of 2025. The increase in underwriting income(2) was largely due to growth in net earned premiums and higher favorable development of loss reserves from prior accident years offset in part by lower ceding commissions as a result of increased retention on the Company's reinsurance treaties. Loss(3) and expense(4) ratios were 53.8% and 21.7%, respectively, for the second quarter of 2026 compared to 55.1% and 20.7% for the second quarter of 2025.

Underwriting income(2) was $199.9 million, resulting in a combined ratio(5) of 76.4% for the first half of 2026 compared to $162.9 million and a combined ratio(5) of 78.8% for the first half of 2025. The increase in underwriting income(2) was largely due to growth in net earned premiums, lower catastrophe losses and higher favorable development of loss reserves from prior accident years. Loss(3) and expense(4) ratios were 55.0% and 21.4%, respectively, for the first half of 2026 compared to 58.5% and 20.3% for the first half of 2025. The loss ratio for the first half of 2025 included 3.4 points of net catastrophe losses, primarily related to the Palisades Fire.

The increase in the expense ratio for both the second quarter and first half of 2026 compared to the prior-year periods was primarily due to lower ceding commissions as a result of higher retention on the Company’s reinsurance treaties. The economic effect of lower ceding commissions was more than offset by the retention of incremental underwriting margin and higher investment income.

2

Summary of Operating Results

The Company’s operating results for the three and six months ended June 30, 2026 and 2025 are summarized as follows:

Three Months Ended June 30, Six Months Ended June 30,

2026 2025 2026 2025

($ in thousands)

Gross written premiums $ 527,608  $ 555,522  $ 1,009,626  $ 1,039,797

Ceded written premiums (75,125) (96,822) (153,881) (199,392)

Net written premiums $ 452,483  $ 458,700  $ 855,745  $ 840,405

Net earned premiums $ 417,597  $ 383,613  $ 824,456  $ 749,403

Fee income 11,941  10,796  22,936  20,355

Losses and loss adjustment expenses 230,922  217,359  466,041  450,335

Underwriting, acquisition and insurance expenses

93,171  81,597  181,405  156,509

Underwriting income(2)

$ 105,445  $ 95,453  $ 199,946  $ 162,914

Loss ratio(3)

53.8  % 55.1  % 55.0  % 58.5  %

Expense ratio(4)

21.7  % 20.7  % 21.4  % 20.3  %

Combined ratio(5)

75.5  % 75.8  % 76.4  % 78.8  %

Annualized return on equity(6)

35.2  % 32.5  % 28.9  % 27.9  %

Annualized operating return on equity(7)

25.2  % 27.0  % 24.4  % 24.7  %

(1)     Net operating earnings is a non-GAAP financial measure. See discussion of "Non-GAAP Financial Measures" below.

(2)    Underwriting income is a non-GAAP financial measure. See discussion of "Non-GAAP Financial Measures" below.

(3)    Loss ratio, expressed as a percentage, is the ratio of losses and loss adjustment expenses to the sum of net earned premiums and fee income.

(4)    Expense ratio, expressed as a percentage, is the ratio of underwriting, acquisition and insurance expenses to the sum of net earned premiums and fee income.

(5)    The combined ratio is the sum of the loss ratio and expense ratio as presented. Calculations of each component may not add due to rounding.

(6)    Annualized return on equity is net income expressed on an annualized basis as a percentage of average beginning and ending stockholders’ equity during the period.

(7)    Annualized operating return on equity is net operating earnings expressed on an annualized basis as a percentage of average beginning and ending stockholders’ equity during the period.

3

The following table summarizes losses incurred for the current accident year and the development of prior accident years for the three and six months ended June 30, 2026 and 2025:

Three Months Ended

June 30, 2026 Three Months Ended

June 30, 2025

Losses and Loss Adjustment Expenses % of Sum of Earned Premiums and Fee Income Losses and Loss Adjustment Expenses % of Sum of Earned Premiums and Fee Income

Loss ratio: ($ in thousands)

Current accident year $ 244,963  57.0  % $ 229,100  58.1  %

Current accident year - catastrophe losses

5,353  1.3  % 3,705  0.9  %

Effect of prior accident year development (19,394) (4.5) % (15,446) (3.9) %

Total $ 230,922  53.8  % $ 217,359  55.1  %

Six Months Ended

June 30, 2026 Six Months Ended

June 30, 2025

Losses and Loss Adjustment Expenses % of Sum of Earned Premiums and Fee Income Losses and Loss Adjustment Expenses % of Sum of Earned Premiums and Fee Income

Loss ratio: ($ in thousands)

Current accident year $ 497,151  58.7  % $ 454,147  59.0  %

Current accident year - catastrophe losses

6,989  0.8  % 26,283  3.4  %

Effect of prior accident year development (38,099) (4.5) % (30,095) (3.9) %

Total $ 466,041  55.0  % $ 450,335  58.5  %

Investment Results

Net investment income was $55.7 million in the second quarter of 2026 compared to $46.5 million in the second quarter of 2025, an increase of 19.9%. Net investment income was $111.2 million in the first half of 2026 compared to $90.3 million in the first half of 2025, an increase of 23.1%. These increases were driven by growth in the Company's investment portfolio generated largely from the investment of strong operating cash flows. The Company’s investment portfolio had an annualized gross investment return(8) of 4.5% and 4.3% for the first half of 2026 and 2025, respectively. Funds are generally invested conservatively in high-quality securities with an average credit quality of "AA-" and the weighted average duration of the fixed-maturity investment portfolio, including cash equivalents, was 4.3 years and 4.0 years at June 30, 2026 and December 31, 2025, respectively. Cash and invested assets totaled $5.5 billion at June 30, 2026 and $5.2 billion at December 31, 2025.

(8)    Gross investment return is investment income from fixed-maturity and equity securities (and short-term investments, if any), before any deductions for fees and expenses, expressed as a percentage of average beginning and ending book values of those investments during the period.

Capital Return to Stockholders

During the second quarter of 2026, the Company repurchased 321,055 shares of its common stock in the open market at an average price of $311.47 per share for a total cost of $100.0 million. In July 2026, the Company's Board of Directors approved an additional $250 million share repurchase authorization, bringing the remaining capacity to $337.5 million under the share repurchase program.

During the second quarter of 2026, the Company declared and paid a cash dividend of $0.25 per share of common stock for a total distribution of $5.7 million.

4

Other

The effective tax rates for the six months ended June 30, 2026 and June 30, 2025 were 19.8% and 20.4%, respectively. In the first half of 2026 and 2025, the effective tax rates were lower than the federal statutory rate of 21% primarily due to the tax benefits from stock-based compensation, including stock options exercised, and from tax-exempt investment income.

Stockholders' equity was $2.0 billion at both June 30, 2026 and December 31, 2025. Book value per share was $89.34 at June 30, 2026 compared to $84.66 at December 31, 2025. Annualized operating return on equity(7) was 24.4% for the first half of 2026, a decrease from 24.7% for the first half of 2025. The decrease was due primarily to higher average stockholders' equity offset in part by higher profitability compared to the prior-year period.

Non-GAAP Financial Measures

Net Operating Earnings

Net operating earnings is defined as net income excluding the effects of the change in the fair value of equity securities, after taxes, net realized investment gains and losses, after taxes, and change in allowance for credit losses on investments, after taxes. Management believes the exclusion of these items provides a useful comparison of the Company's underlying business performance from period to period. Net operating earnings and percentages or calculations using net operating earnings (e.g., diluted operating earnings per share and annualized operating return on equity) are non-GAAP financial measures. Net operating earnings should not be viewed as a substitute for net income calculated in accordance with GAAP, and other companies may define net operating earnings differently.

5

For the three and six months ended June 30, 2026 and 2025, net income and diluted earnings per share reconcile to net operating earnings and diluted operating earnings per share as follows:

Three Months Ended June 30, Six Months Ended June 30,

2026 2025 2026 2025

($ in thousands, except per share data)

Net operating earnings:

Net income $ 175,874  $ 134,121  $ 288,428  $ 223,348

Adjustments:

Change in the fair value of equity securities, before taxes (56,196) (28,621) (47,840) (31,659)

Income tax expense (1)

11,801  6,010  10,046  6,648

Change in fair value of equity securities, after taxes (44,395) (22,611) (37,794) (25,011)

Net realized investment gains, before taxes (6,729) (136) (8,448) (673)

Income tax expense (1)

1,413  29  1,774  141

Net realized investment gains, after taxes (5,316) (107) (6,674) (532)

Change in allowance for credit losses on investments, before taxes —  (5) 27  15

Income tax (benefit) expense (1)

—  1  (6) (3)

Change in allowance for credit losses on investments, after taxes —  (4) 21  12

Net operating earnings $ 126,163  $ 111,399  $ 243,981  $ 197,817

Diluted operating earnings per share:

Diluted earnings per share $ 7.72  $ 5.76  $ 12.58  $ 9.59

Change in the fair value of equity securities, after taxes, per share (1.95) (0.97) (1.65) (1.07)

Net realized investment gains, after taxes, per share (0.23) —  (0.29) (0.02)

Diluted operating earnings per share(2)

$ 5.54  $ 4.78  $ 10.64  $ 8.49

Operating return on equity:

Average equity(3)

$ 2,001,230  $ 1,652,774  $ 1,997,349  $ 1,603,067

Annualized return on equity(4)

35.2  % 32.5  % 28.9  % 27.9  %

Annualized operating return on equity(5)

25.2  % 27.0  % 24.4  % 24.7  %

(1)     Income taxes on adjustments to reconcile net income to net operating earnings use a 21% effective tax rate.

(2)     Diluted operating earnings per share may not add due to rounding.

(3)    Average equity is computed by adding the total stockholders' equity as of the date indicated to the prior quarter-end or year-end total, as applicable, and dividing by two.

(4)    Annualized return on equity is net income expressed on an annualized basis as a percentage of average beginning and ending stockholders' equity during the period.

(5)    Annualized operating return on equity is net operating earnings expressed on an annualized basis as a percentage of average beginning and ending stockholders' equity during the period.

6

Underwriting Income

Underwriting income is defined as net income excluding net investment income, the change in the fair value of equity securities, net realized investment gains and losses, change in allowance for credit losses on investments, interest expense, other expenses, other income and income tax expense. The Company uses underwriting income as an internal performance measure in the management of its operations because the Company believes it gives management and users of the Company's financial information useful insight into the Company's results of operations and underlying business performance. Underwriting income should not be viewed as a substitute for net income calculated in accordance with GAAP, and other companies may define underwriting income differently.

For the three and six months ended June 30, 2026 and 2025, net income reconciles to underwriting income as follows:

Three Months Ended June 30, Six Months Ended June 30,

2026 2025 2026 2025

(in thousands)

Net income $ 175,874  $ 134,121  $ 288,428  $ 223,348

Income tax expense 43,930  34,168  71,036  57,252

Income before income taxes 219,804  168,289  359,464  280,600

Net investment income (55,740) (46,473) (111,163) (90,292)

Change in the fair value of equity securities

(56,196) (28,621) (47,840) (31,659)

Net realized investment gains (6,729) (136) (8,448) (673)

Change in allowance for credit losses on investments —  (5) 27  15

Interest expense 3,323  2,557  6,490  5,095

Other expenses (6)

1,299  12  1,828  672

Other income (316) (170) (412) (844)

Underwriting income $ 105,445  $ 95,453  $ 199,946  $ 162,914

(6)    Other expenses includes primarily corporate expenses not allocated to the Company's insurance operations.

Conference Call

Kinsale Capital Group will hold a conference call to discuss this press release on Friday, July 24, 2026 at 9:00 a.m. (Eastern Time). Members of the public may access the conference call by dialing (833) 461-5787, conference ID# 761838118, or via the Internet by going to www.kinsalecapitalgroup.com and clicking on the "Investor Relations" link. A replay of the call will be available on the website.

Forward-Looking Statements

This press release contains forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. In some cases, such forward-looking statements may be identified by terms such as "anticipates," "estimates," "expects," "intends," "plans," "predicts," "projects," "believes," "seeks," "outlook," "future," "will," "would," "should," "could," "may," "can have," "prospects" or similar words. Forward-looking statements involve risks and uncertainties that could cause actual results to differ materially from those in the forward-looking statements. Although it is not possible to identify all of these risks and factors, they include, among others, the following: inadequate loss reserves to cover the Company's actual losses; inherent uncertainty of models resulting in actual losses that are materially different than the Company's estimates; adverse economic factors; a decline in the Company's financial strength rating; loss of one or more key executives; loss of a group of brokers that generate significant portions of the Company's business; failure of any of the loss limitations or exclusions the Company employs, or change in other claims or coverage issues; adverse performance of the Company's investment portfolio; adverse market conditions that affect its excess and surplus lines insurance operations; and other risks described in the Company's filings with the Securities and Exchange Commission. These forward-looking statements speak only as of the date of

7

this release and the Company does not undertake any obligation to update or revise any forward-looking information to reflect changes in assumptions, the occurrence of unanticipated events, or otherwise.

About Kinsale Capital Group, Inc.

Kinsale Capital Group, Inc. is a specialty insurance group headquartered in Richmond, Virginia, focusing on the excess and surplus lines market.

Contact

Kinsale Capital Group, Inc.

Bryan Petrucelli

Executive Vice President, Chief Financial Officer and Treasurer

804-289-1272

ir@kinsalecapitalgroup.com

8

KINSALE CAPITAL GROUP, INC. AND SUBSIDIARIES

Unaudited Consolidated Statements of Income and Comprehensive Income

Three Months Ended June 30, Six Months Ended June 30,

2026 2025 2026 2025

Revenues (in thousands, except per share data)

Gross written premiums $ 527,608  $ 555,522  $ 1,009,626  $ 1,039,797

Ceded written premiums (75,125) (96,822) (153,881) (199,392)

Net written premiums 452,483  458,700  855,745  840,405

Change in unearned premiums (34,886) (75,087) (31,289) (91,002)

Net earned premiums 417,597  383,613  824,456  749,403

Fee income 11,941  10,796  22,936  20,355

Net investment income 55,740  46,473  111,163  90,292

Change in the fair value of equity securities 56,196  28,621  47,840  31,659

Net realized investment gains 6,729  136  8,448  673

Change in allowance for credit losses on investments —  5  (27) (15)

Other income 316  170  412  844

Total revenues 548,519  469,814  1,015,228  893,211

Expenses

Losses and loss adjustment expenses 230,922  217,359  466,041  450,335

Underwriting, acquisition and insurance expenses 93,171  81,597  181,405  156,509

Interest expense 3,323  2,557  6,490  5,095

Other expenses 1,299  12  1,828  672

Total expenses 328,715  301,525  655,764  612,611

Income before income taxes 219,804  168,289  359,464  280,600

Total income tax expense 43,930  34,168  71,036  57,252

Net income 175,874  134,121  288,428  223,348

Other comprehensive income (loss)

Change in net unrealized losses on available-for-sale investments, net of taxes (8,611) 14,453  (43,524) 40,835

Total comprehensive income $ 167,263  $ 148,574  $ 244,904  $ 264,183

Earnings per share:

Basic $ 7.73  $ 5.79  $ 12.61  $ 9.64

Diluted $ 7.72  $ 5.76  $ 12.58  $ 9.59

Weighted-average shares outstanding:

Basic 22,758  23,175  22,867  23,172

Diluted 22,785  23,291  22,921  23,301

9

KINSALE CAPITAL GROUP, INC. AND SUBSIDIARIES

Unaudited Condensed Consolidated Balance Sheets

June 30, 2026 December 31, 2025

Assets (in thousands)

Investments:

Fixed-maturity securities at fair value

$ 4,470,546  $ 4,341,450

Equity securities at fair value 773,118  626,399

Real estate investments, net 54,668  55,236

Short-term investments —  3,864

Total investments 5,298,332  5,026,949

Cash and cash equivalents 210,511  163,361

Investment income due and accrued 33,486  30,971

Premiums receivable, net 148,047  124,593

Reinsurance recoverables, net 415,096  394,329

Ceded unearned premiums 44,398  44,506

Deferred policy acquisition costs, net of ceding commissions

124,743  118,737

Intangible assets 3,538  3,538

Deferred income tax asset, net 46,297  42,191

Other assets 104,382  94,386

Total assets $ 6,428,830  $ 6,043,561

Liabilities & Stockholders' Equity

Liabilities:

Reserves for unpaid losses and loss adjustment expenses $ 3,192,552  $ 2,890,870

Unearned premiums 891,575  860,394

Payable to reinsurers 32,437  34,385

Accounts payable and accrued expenses 36,526  66,301

Debt 224,535  224,397

Other liabilities 16,091  7,631

Total liabilities 4,393,716  4,083,978

Stockholders' equity 2,035,114  1,959,583

Total liabilities and stockholders' equity $ 6,428,830  $ 6,043,561

10

GRAPHIC

GRAPHIC

Filename: kinsalecapitalgrouplogo.jpg · Sequence: 6

Binary file (153345 bytes)

Download kinsalecapitalgrouplogo.jpg

XML — IDEA: XBRL DOCUMENT

XML

Filename: R1.htm · Sequence: 8

v3.26.1

DEI Document

Jul. 23, 2026

Document and Entity Information [Abstract]

Document Type

8-K

Document Period End Date

Jul. 23, 2026

Entity Registrant Name

KINSALE CAPITAL GROUP, INC.

Entity Incorporation, State or Country Code

DE

Entity File Number

001-37848

Entity Tax Identification Number

98-0664337

Entity Address, Address Line One

2025 Staples Mill Road

Entity Address, City or Town

Richmond

Entity Address, State or Province

VA

Entity Address, Postal Zip Code

23230

City Area Code

804

Local Phone Number

289-1300

Written Communications

false

Soliciting Material

false

Pre-commencement Tender Offer

false

Pre-commencement Issuer Tender Offer

false

Title of 12(b) Security

Common Stock, par value $0.01 per share

Trading Symbol

KNSL

Security Exchange Name

NYSE

Entity Emerging Growth Company

false

Amendment Flag

false

Entity Central Index Key

0001669162

X

- Definition

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

+ References

No definition available.

+ Details

Name:

dei_AmendmentFlag

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Area code of city

+ References

No definition available.

+ Details

Name:

dei_CityAreaCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

+ References

No definition available.

+ Details

Name:

dei_DocumentPeriodEndDate

Namespace Prefix:

dei_

Data Type:

xbrli:dateItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

Name:

dei_DocumentType

Namespace Prefix:

dei_

Data Type:

dei:submissionTypeItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Address Line 1 such as Attn, Building Name, Street Name

+ References

No definition available.

+ Details

Name:

dei_EntityAddressAddressLine1

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the City or Town

+ References

No definition available.

+ Details

Name:

dei_EntityAddressCityOrTown

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Code for the postal or zip code

+ References

No definition available.

+ Details

Name:

dei_EntityAddressPostalZipCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the state or province.

+ References

No definition available.

+ Details

Name:

dei_EntityAddressStateOrProvince

Namespace Prefix:

dei_

Data Type:

dei:stateOrProvinceItemType

Balance Type:

na

Period Type:

duration

X

- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityCentralIndexKey

Namespace Prefix:

dei_

Data Type:

dei:centralIndexKeyItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Indicate if registrant meets the emerging growth company criteria.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityEmergingGrowthCompany

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

+ References

No definition available.

+ Details

Name:

dei_EntityFileNumber

Namespace Prefix:

dei_

Data Type:

dei:fileNumberItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Two-character EDGAR code representing the state or country of incorporation.

+ References

No definition available.

+ Details

Name:

dei_EntityIncorporationStateCountryCode

Namespace Prefix:

dei_

Data Type:

dei:edgarStateCountryItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityRegistrantName

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityTaxIdentificationNumber

Namespace Prefix:

dei_

Data Type:

dei:employerIdItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Local phone number for entity.

+ References

No definition available.

+ Details

Name:

dei_LocalPhoneNumber

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

+ Details

Name:

dei_PreCommencementIssuerTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

+ Details

Name:

dei_PreCommencementTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Title of a 12(b) registered security.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

+ Details

Name:

dei_Security12bTitle

Namespace Prefix:

dei_

Data Type:

dei:securityTitleItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the Exchange on which a security is registered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

+ Details

Name:

dei_SecurityExchangeName

Namespace Prefix:

dei_

Data Type:

dei:edgarExchangeCodeItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

+ Details

Name:

dei_SolicitingMaterial

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Trading symbol of an instrument as listed on an exchange.

+ References

No definition available.

+ Details

Name:

dei_TradingSymbol

Namespace Prefix:

dei_

Data Type:

dei:tradingSymbolItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

+ Details

Name:

dei_WrittenCommunications

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Document and Entity Information [Abstract]

+ References

No definition available.

+ Details

Name:

knsl_DocumentandEntityInformationAbstract

Namespace Prefix:

knsl_

Data Type:

xbrli:stringItemType

Balance Type:

na

Period Type:

duration