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[Form 4] LIGAND PHARMACEUTICALS INC Insider Trading Activity

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Ligand Pharmaceuticals CLO & Secretary Andrew Reardon reported an exercise-and-sell transaction in company stock. On July 1, 2026, he exercised 5,000 stock options at $52.27 per share and sold 5,000 shares of common stock in multiple open-market trades at prices generally around the low-to-mid $300s. The filing notes these transactions were made under a pre-arranged Rule 10b5-1 trading plan. On June 30, 2026, he also acquired 132 shares through the Ligand Employee Stock Purchase Plan in an exempt transaction, and he continues to hold a substantial direct equity stake after these trades.

Positive

  • None.

Negative

  • None.
Insider Reardon Andrew
Role CLO & Secretary
Sold 5,000 shs ($1.57M)
Type Security Shares Price Value
Exercise Employee Stock Option (right to buy) 5,000 $0.00 --
Exercise Common Stock 5,000 $52.27 $261K
Sale Common Stock 396 $308.9886 $122K
Sale Common Stock 104 $310.2023 $32K
Sale Common Stock 1,119 $311.72 $349K
Sale Common Stock 1,081 $312.2784 $338K
Sale Common Stock 700 $313.4574 $219K
Sale Common Stock 100 $314.5788 $31K
Sale Common Stock 900 $315.7775 $284K
Sale Common Stock 600 $317.1517 $190K
Other Common Stock 132 $160.7095 $21K
Holdings After Transaction: Employee Stock Option (right to buy) — 34,444 shares (Direct, null); Common Stock — 46,514 shares (Direct, null)
Footnotes (1)
  1. These shares were acquired under the Ligand Employee Stock Purchase Plan in transactions that were exempt under both Rule 16b-3(d) and Rule 16b-3(c). The transactions reported on this Form 4 were made pursuant to a written trading plan adopted by the Reporting Person on November 24, 2025, in accordance with Rule 10b5-1. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $308.6300 to $309.6000. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $310.0100 to $310.2100. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $311.0900 to $312.0400. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $312.1050 to $312.5300. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $313.1300 to $314.0100. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $314.3100 to $314.5900. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $315.4400 to $316.2600. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $316.7000 to $317.4300. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The stock option vests and is exercisable as to 12.5% of the underlying shares on February 1, 2023, and in 42 substantially equal monthly installments thereafter.
Shares sold 5,000 shares Total common shares sold in open-market transactions on July 1, 2026
Options exercised 5,000 shares Employee stock options exercised into common stock on July 1, 2026
Option strike price $52.27 per share Exercise price for 5,000 employee stock options
Sale price range (low) $308.63 per share Lower end of reported weighted-average sale ranges in July 1, 2026 trades
Sale price range (high) $317.43 per share Upper end of reported weighted-average sale ranges in July 1, 2026 trades
ESPP acquisition 132 shares Common shares acquired June 30, 2026 under Employee Stock Purchase Plan
10b5-1 plan adoption date November 24, 2025 Date the written trading plan governing these sales was adopted
Option expiration August 1, 2032 Expiration date of the employee stock option that was exercised
Rule 10b5-1 regulatory
"transactions were made pursuant to a written trading plan adopted by the Reporting Person on November 24, 2025, in accordance with Rule 10b5-1"
Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.
Employee Stock Purchase Plan financial
"These shares were acquired under the Ligand Employee Stock Purchase Plan in transactions that were exempt"
An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.
Employee Stock Option (right to buy) financial
"security_title: "Employee Stock Option (right to buy)" with underlying security title Common Stock"
weighted-average price financial
"The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions"
Weighted-average price is the average of multiple prices where each price is counted according to its size or importance—larger trades carry more weight than smaller ones, like averaging course grades by credit hours. It matters to investors because it gives a more realistic picture of the true price paid or received, helping assess trade execution, compare performance, calculate cost basis, and value positions more accurately than a simple average.
Rule 16b-3(d) regulatory
"transactions that were exempt under both Rule 16b-3(d) and Rule 16b-3(c)"
Rule 16b-3(d) is a narrow SEC safe-harbor that shields company insiders (officers, directors and large shareholders) from liability for short‑swing profits when their buys or sells of company stock are made under a pre-established, written plan or contract that removes the insider’s ability to time trades. For investors, this matters because it permits predictable, automated insider transactions — like scheduled sales for diversification or payroll withholding — without triggering forced disgorgement, so such planned trades are treated differently from opportunistic insider trading.
open market or private transaction financial
"transaction_code_description: "Sale in open market or private transaction" for common stock sales"
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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Reardon Andrew

(Last)(First)(Middle)
555 HERITAGE DRIVE
SUITE 200

(Street)
JUPITER FLORIDA 33458

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
LIGAND PHARMACEUTICALS INC [ LGND ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
CLO & Secretary
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/30/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock06/30/2026J(1)132A$160.709541,514D
Common Stock07/01/2026M5,000(2)A$52.2746,514D
Common Stock07/01/2026S396(2)D$308.9886(3)46,118D
Common Stock07/01/2026S104(2)D$310.2023(4)46,014D
Common Stock07/01/2026S1,119(2)D$311.72(5)44,895D
Common Stock07/01/2026S1,081(2)D$312.2784(6)43,814D
Common Stock07/01/2026S700(2)D$313.4574(7)43,114D
Common Stock07/01/2026S100(2)D$314.5788(8)43,014D
Common Stock07/01/2026S900(2)D$315.7775(9)42,114D
Common Stock07/01/2026S600(2)D$317.1517(10)41,514D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Employee Stock Option (right to buy)$52.2707/01/2026M5,000(2) (11)08/01/2032Common Stock5,000$0.034,444D
Explanation of Responses:
1. These shares were acquired under the Ligand Employee Stock Purchase Plan in transactions that were exempt under both Rule 16b-3(d) and Rule 16b-3(c).
2. The transactions reported on this Form 4 were made pursuant to a written trading plan adopted by the Reporting Person on November 24, 2025, in accordance with Rule 10b5-1.
3. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $308.6300 to $309.6000. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
4. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $310.0100 to $310.2100. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
5. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $311.0900 to $312.0400. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
6. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $312.1050 to $312.5300. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
7. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $313.1300 to $314.0100. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
8. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $314.3100 to $314.5900. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
9. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $315.4400 to $316.2600. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
10. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $316.7000 to $317.4300. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
11. The stock option vests and is exercisable as to 12.5% of the underlying shares on February 1, 2023, and in 42 substantially equal monthly installments thereafter.
/s/Andrew Reardon07/06/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What did Ligand (LGND) executive Andrew Reardon do in this Form 4 filing?

Andrew Reardon exercised 5,000 stock options and sold 5,000 shares of Ligand common stock. The sales occurred in multiple open-market trades at prices in the low-to-mid $300s and were executed under a pre-arranged Rule 10b5-1 trading plan.

At what prices did Andrew Reardon sell Ligand (LGND) shares in this transaction?

Reardon’s reported sales used weighted-average prices, with trades occurring in ranges from $308.63 up to $317.43. Each Form 4 line gives a specific weighted-average price and notes that detailed price-by-trade information is available upon request from the company or the SEC staff.

How many Ligand (LGND) stock options did Andrew Reardon exercise and at what strike price?

Reardon exercised 5,000 employee stock options covering Ligand common stock at a strike price of $52.27 per share. These options are described as an employee stock option right to buy, with an expiration date in 2032 and a vesting schedule outlined in the footnotes.

Was Andrew Reardon’s Ligand (LGND) stock sale part of a Rule 10b5-1 trading plan?

Yes. The filing states the transactions were made under a written trading plan adopted on November 24, 2025, in accordance with Rule 10b5-1. Such plans pre-schedule trades, indicating the timing of these sales was set in advance rather than decided opportunistically.

Did Andrew Reardon acquire any Ligand (LGND) shares through an employee purchase program?

Yes. On June 30, 2026, Reardon acquired 132 shares of Ligand common stock under the Ligand Employee Stock Purchase Plan. The filing notes this transaction was exempt under Rule 16b-3(d) and Rule 16b-3(c), reflecting its compensation-related nature rather than an open-market trade.

What is the remaining option position or derivative exposure for Andrew Reardon after these Ligand (LGND) trades?

The filing’s derivative section shows an employee stock option covering 5,000 shares being exercised, with no remaining derivative positions listed in the derivative summary. This suggests the reported option grant was fully exercised in connection with the July 1, 2026 transaction.