IAM: Rachlin Evan Lockwood bought $11.5M of stock

By AlphaYouPublished Oct 19, 2026Form 4

Stocks in this disclosure

Reported activity

Rachlin Evan Lockwood

Reporting filer

Rachlin Evan Lockwood reported buying 718,750 shares of Iambic Therapeutics, Inc. for about $11.5M ($16.00 a share on average). Form 4 filed Oct 19, 2026 lists 8 entries.

See the price move since this trade →

Disclosed: Oct 19, 2026

Reported details

8 entries

All validated entries in this disclosure
Security	Owner	Date	Code	Action	Quantity	Price	Following holdings	Reporting delay	Filed terms and references
Common Stock	Rachlin Evan Lockwood	2026-10-16	C	Conversion	1458736	Not stated (see footnotes)	1,458,736	3 days	Filed terms security Title: Common Stock transaction Date: 2026-10-16 transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Shares: 1458736 id: F1 id: F2 transaction Acquired Disposed Code: A shares Owned Following Transaction: 1458736 direct Or Indirect Ownership: I nature Of Ownership: See footnote id: F3
Common Stock	Rachlin Evan Lockwood	2026-10-16	C	Conversion	410762	Not stated (see footnotes)	1,869,498	3 days	Filed terms security Title: Common Stock transaction Date: 2026-10-16 transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Shares: 410762 id: F4 transaction Acquired Disposed Code: A shares Owned Following Transaction: 1869498 direct Or Indirect Ownership: I nature Of Ownership: See footnote id: F3
Common Stock	Rachlin Evan Lockwood	2026-10-16	P	Purchase	718750	16	2,588,248	3 days	Filed terms security Title: Common Stock transaction Date: 2026-10-16 transaction Form Type: 4 transaction Code: P equity Swap Involved: 0 transaction Shares: 718750 transaction Price Per Share: 16 transaction Acquired Disposed Code: A shares Owned Following Transaction: 2588248 direct Or Indirect Ownership: I nature Of Ownership: See footnote id: F3
Common Stock	Rachlin Evan Lockwood	2026-10-16	C	Conversion	57754	Not stated (see footnotes)	57,754	3 days	Filed terms security Title: Common Stock transaction Date: 2026-10-16 transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Shares: 57754 id: F1 transaction Acquired Disposed Code: A shares Owned Following Transaction: 57754 direct Or Indirect Ownership: I nature Of Ownership: See footnote id: F5
Series B Convertible Preferred Stock (derivative)	Rachlin Evan Lockwood	2026-10-16	C	Conversion	1152025	0	0	3 days	Filed terms security Title: Series B Convertible Preferred Stock id: F1 transaction Date: 2026-10-16 transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Shares: 1152025 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F1 id: F1 underlying Security Title: Common Stock underlying Security Shares: 1152025 shares Owned Following Transaction: 0 direct Or Indirect Ownership: I nature Of Ownership: See footnote id: F3
Series B Convertible Preferred Stock (derivative)	Rachlin Evan Lockwood	2026-10-16	C	Conversion	57754	0	0	3 days	Filed terms security Title: Series B Convertible Preferred Stock id: F1 transaction Date: 2026-10-16 transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Shares: 57754 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F1 id: F1 underlying Security Title: Common Stock underlying Security Shares: 57754 shares Owned Following Transaction: 0 direct Or Indirect Ownership: I nature Of Ownership: See footnote id: F5
Series B-3 Convertible Preferred Stock (derivative)	Rachlin Evan Lockwood	2026-10-16	C	Conversion	306711	0	0	3 days	Filed terms security Title: Series B-3 Convertible Preferred Stock id: F2 transaction Date: 2026-10-16 transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Shares: 306711 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F2 id: F2 underlying Security Title: Common Stock underlying Security Shares: 306711 shares Owned Following Transaction: 0 direct Or Indirect Ownership: I nature Of Ownership: See footnote id: F3
Convertible Promissory Notes (derivative)	Rachlin Evan Lockwood	2026-10-16	C	Conversion	410762	0	0	3 days	Filed terms security Title: Convertible Promissory Notes id: F4 transaction Date: 2026-10-16 transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Shares: 410762 transaction Price Per Share: 0 transaction Acquired Disposed Code: D exercise Date: 2026-10-16 expiration Date: 2028-08-14 underlying Security Title: Common Stock underlying Security Shares: 410762 shares Owned Following Transaction: 0 direct Or Indirect Ownership: I nature Of Ownership: See footnote id: F3

Common Stock

Owner: Rachlin Evan Lockwood
Date: 2026-10-16
Code: C
Action: Conversion
Quantity: 1458736
Price: Not stated (see footnotes)
Following holdings: 1,458,736
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-10-16
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 1458736
id: F1
id: F2
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 1458736
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Common Stock

Owner: Rachlin Evan Lockwood
Date: 2026-10-16
Code: C
Action: Conversion
Quantity: 410762
Price: Not stated (see footnotes)
Following holdings: 1,869,498
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-10-16
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 410762
id: F4
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 1869498
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Common Stock

Owner: Rachlin Evan Lockwood
Date: 2026-10-16
Code: P
Action: Purchase
Quantity: 718750
Price: 16
Following holdings: 2,588,248
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-10-16
transaction Form Type: 4
transaction Code: P
equity Swap Involved: 0
transaction Shares: 718750
transaction Price Per Share: 16
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 2588248
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Common Stock

Owner: Rachlin Evan Lockwood
Date: 2026-10-16
Code: C
Action: Conversion
Quantity: 57754
Price: Not stated (see footnotes)
Following holdings: 57,754
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-10-16
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 57754
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 57754
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F5

Series B Convertible Preferred Stock (derivative)

Owner: Rachlin Evan Lockwood
Date: 2026-10-16
Code: C
Action: Conversion
Quantity: 1152025
Price: 0
Following holdings: 0
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Series B Convertible Preferred Stock
id: F1
transaction Date: 2026-10-16
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 1152025
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 1152025
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Series B Convertible Preferred Stock (derivative)

Owner: Rachlin Evan Lockwood
Date: 2026-10-16
Code: C
Action: Conversion
Quantity: 57754
Price: 0
Following holdings: 0
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Series B Convertible Preferred Stock
id: F1
transaction Date: 2026-10-16
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 57754
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 57754
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F5

Series B-3 Convertible Preferred Stock (derivative)

Owner: Rachlin Evan Lockwood
Date: 2026-10-16
Code: C
Action: Conversion
Quantity: 306711
Price: 0
Following holdings: 0
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Series B-3 Convertible Preferred Stock
id: F2
transaction Date: 2026-10-16
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 306711
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F2
id: F2
underlying Security Title: Common Stock
underlying Security Shares: 306711
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Convertible Promissory Notes (derivative)

Owner: Rachlin Evan Lockwood
Date: 2026-10-16
Code: C
Action: Conversion
Quantity: 410762
Price: 0
Following holdings: 0
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Convertible Promissory Notes
id: F4
transaction Date: 2026-10-16
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 410762
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
exercise Date: 2026-10-16
expiration Date: 2028-08-14
underlying Security Title: Common Stock
underlying Security Shares: 410762
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Purchases, sales, grants and option exercises are different transactions. The reported code identifies the action; it does not establish a motive.

Filing context

Quantities and prices are shown in the units filed. No trade value is inferred from their product.
Rachlin Evan Lockwood: Director.
F1: Each share of Series B Convertible Preferred Stock automatically converted into Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Common Stock and had no expiration date.
F2: Each share of Series B-3 Convertible Preferred Stock automatically converted into Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Common Stock and had no expiration date.
F3: The shares are held of record by Ascenta Capital Fund I, L.P., or Ascenta Capital Fund I. As a Managing Member of Ascenta Capital Fund I, G.P., L.L.C., the General Partner of Ascenta Capital Fund I, the reporting person shares voting and dispositive power with respect to the shares held of record by Ascenta Capital Fund I. The reporting person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Exchange Act, except to the extent of his pecuniary interest therein, if any.
F4: The conversion price was equal to 85% of the Issuer's initial public offering price of $16.00 per share (reflecting a 15% discount).
F5: The shares are held of record by Ascenta Capital Project Turing SPV, L.P., or Ascenta Capital Project Turing. As a Managing Member of Ascenta Capital Fund I, G.P., L.L.C., the General Partner of Ascenta Capital Project Turing, the reporting person shares voting and dispositive power with respect to the shares held of record by Ascenta Capital Project Turing. The reporting person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Exchange Act, except to the extent of his pecuniary interest therein, if any.

Original sources

SEC ownership filing

Prepared automatically from public filing data. Report a correction.

Security

Owner

Date

Code

Action

Quantity

Price

Following holdings

Reporting delay

Filed terms and references

Common Stock

Rachlin Evan Lockwood

2026-10-16

Conversion

1458736

Not stated (see footnotes)

1,458,736

3 days

Filed terms

security Title: Common Stock
transaction Date: 2026-10-16
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 1458736
id: F1
id: F2
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 1458736
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Common Stock

Rachlin Evan Lockwood

2026-10-16

Conversion

410762

Not stated (see footnotes)

1,869,498

3 days

Filed terms

security Title: Common Stock
transaction Date: 2026-10-16
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 410762
id: F4
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 1869498
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Common Stock

Rachlin Evan Lockwood

2026-10-16

Purchase

718750

2,588,248

3 days

Filed terms

security Title: Common Stock
transaction Date: 2026-10-16
transaction Form Type: 4
transaction Code: P
equity Swap Involved: 0
transaction Shares: 718750
transaction Price Per Share: 16
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 2588248
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Common Stock

Rachlin Evan Lockwood

2026-10-16

Conversion

57754

Not stated (see footnotes)

57,754

3 days

Filed terms

security Title: Common Stock
transaction Date: 2026-10-16
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 57754
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 57754
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F5

Series B Convertible Preferred Stock (derivative)

Rachlin Evan Lockwood

2026-10-16

Conversion

1152025

3 days

Filed terms

security Title: Series B Convertible Preferred Stock
id: F1
transaction Date: 2026-10-16
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 1152025
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 1152025
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Series B Convertible Preferred Stock (derivative)

Rachlin Evan Lockwood

2026-10-16

Conversion

57754

3 days

Filed terms

security Title: Series B Convertible Preferred Stock
id: F1
transaction Date: 2026-10-16
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 57754
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 57754
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F5

Series B-3 Convertible Preferred Stock (derivative)

Rachlin Evan Lockwood

2026-10-16

Conversion

306711

3 days

Filed terms

security Title: Series B-3 Convertible Preferred Stock
id: F2
transaction Date: 2026-10-16
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 306711
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F2
id: F2
underlying Security Title: Common Stock
underlying Security Shares: 306711
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Convertible Promissory Notes (derivative)

Rachlin Evan Lockwood

2026-10-16

Conversion

410762

3 days

Filed terms

security Title: Convertible Promissory Notes
id: F4
transaction Date: 2026-10-16
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 410762
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
exercise Date: 2026-10-16
expiration Date: 2028-08-14
underlying Security Title: Common Stock
underlying Security Shares: 410762
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Filing context

Quantities and prices are shown in the units filed. No trade value is inferred from their product.

Rachlin Evan Lockwood: Director.

F1: Each share of Series B Convertible Preferred Stock automatically converted into Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Common Stock and had no expiration date.

F2: Each share of Series B-3 Convertible Preferred Stock automatically converted into Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Common Stock and had no expiration date.

F3: The shares are held of record by Ascenta Capital Fund I, L.P., or Ascenta Capital Fund I. As a Managing Member of Ascenta Capital Fund I, G.P., L.L.C., the General Partner of Ascenta Capital Fund I, the reporting person shares voting and dispositive power with respect to the shares held of record by Ascenta Capital Fund I. The reporting person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Exchange Act, except to the extent of his pecuniary interest therein, if any.

F4: The conversion price was equal to 85% of the Issuer's initial public offering price of $16.00 per share (reflecting a 15% discount).

F5: The shares are held of record by Ascenta Capital Project Turing SPV, L.P., or Ascenta Capital Project Turing. As a Managing Member of Ascenta Capital Fund I, G.P., L.L.C., the General Partner of Ascenta Capital Project Turing, the reporting person shares voting and dispositive power with respect to the shares held of record by Ascenta Capital Project Turing. The reporting person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Exchange Act, except to the extent of his pecuniary interest therein, if any.