STOCK TITAN

[Form 4] Rambus Inc Insider Trading Activity

Filing Impact
(Low)
Filing Sentiment
(Negative)
Form Type
4
Rhea-AI Filing Summary

Form 4 filing for Amkor Technology (AMKR) dated 08/05/2025 details an internal transfer of 876,004 common shares. The reporting person is the “2023 Grantor Retained Annuity Trust of James J. Kim.” On 08/01/2025 the trust distributed 438,002 shares each to Susan Y. Kim and John T. Kim in two separate Code G (bona-fide gift) transactions recorded at $0.00. After the first transfer the trust still held 438,002 shares; after the second, its beneficial ownership fell to 0 shares. Susan Y. Kim, who is already sole trustee of the GRAT, now directly holds the first block; John T. Kim controls the second. No derivative securities were involved. The transactions do not alter Amkor’s total shares outstanding but re-allocate ownership within the Kim family, historically a >10 % holder. There is no indication of open-market selling pressure or cash proceeds, so market impact should be limited to minor shifts in insider ownership reporting.

Il modulo 4 relativo ad Amkor Technology (AMKR) datato 05/08/2025 descrive un trasferimento interno di 876.004 azioni ordinarie. La persona che ha effettuato la segnalazione è il “2023 Grantor Retained Annuity Trust di James J. Kim.” In data 01/08/2025 il trust ha distribuito 438.002 azioni ciascuno a Susan Y. Kim e John T. Kim in due distinte operazioni Code G (donazione genuina) registrate a 0,00 $. Dopo il primo trasferimento il trust deteneva ancora 438.002 azioni; dopo il secondo, la sua proprietà effettiva è scesa a 0 azioni. Susan Y. Kim, già unica fiduciaria del GRAT, detiene ora direttamente il primo blocco; John T. Kim controlla il secondo. Non sono stati coinvolti titoli derivati. Le operazioni non modificano il totale delle azioni in circolazione di Amkor ma riposizionano la proprietà all’interno della famiglia Kim, storicamente detentrice di oltre il 10%. Non vi sono indicazioni di vendite sul mercato aperto o di ricavi in contanti, quindi l’impatto sul mercato dovrebbe limitarsi a lievi variazioni nella segnalazione della proprietà interna.

La presentación del Formulario 4 para Amkor Technology (AMKR) con fecha 05/08/2025 detalla una transferencia interna de 876,004 acciones comunes. La persona que reporta es el “2023 Grantor Retained Annuity Trust de James J. Kim.” El 01/08/2025, el fideicomiso distribuyó 438,002 acciones a cada uno de Susan Y. Kim y John T. Kim en dos transacciones separadas Código G (donación legítima) registradas a $0.00. Después de la primera transferencia, el fideicomiso aún poseía 438,002 acciones; tras la segunda, su propiedad efectiva cayó a 0 acciones. Susan Y. Kim, quien ya es la única fiduciaria del GRAT, ahora posee directamente el primer bloque; John T. Kim controla el segundo. No se involucraron valores derivados. Las transacciones no alteran el total de acciones en circulación de Amkor, pero reasignan la propiedad dentro de la familia Kim, históricamente poseedora de más del 10%. No hay indicios de presión de venta en el mercado abierto ni ingresos en efectivo, por lo que el impacto en el mercado debería limitarse a pequeños cambios en el reporte de propiedad interna.

2025년 8월 5일자 Amkor Technology (AMKR)의 Form 4 제출서류는 876,004주의 보통주 내부 이전을 상세히 기록하고 있습니다. 보고자는 'James J. Kim의 2023년 Grantor Retained Annuity Trust'입니다. 2025년 8월 1일, 해당 신탁은 각각 438,002주씩Susan Y. KimJohn T. Kim에게 두 건의 별도 Code G (진정한 증여) 거래0.00달러에 배분했습니다. 첫 번째 이전 후 신탁은 여전히 438,002주를 보유했으며, 두 번째 이후에는 실질 소유주가 0주로 감소했습니다. 이미 GRAT의 단독 수탁자인 Susan Y. Kim은 첫 번째 블록을 직접 보유하고 있으며, John T. Kim은 두 번째 블록을 관리합니다. 파생 증권은 포함되지 않았습니다. 이번 거래는 Amkor의 총 발행 주식 수에는 영향을 미치지 않지만 역사적으로 10% 이상 보유한 Kim 가족 내에서 소유권이 재분배된 것입니다. 공개 시장에서의 매도 압력이나 현금 수익은 없으므로 시장 영향은 내부자 소유 보고의 미미한 변동에 국한될 것입니다.

Le dépôt du formulaire 4 pour Amkor Technology (AMKR) daté du 05/08/2025 détaille un transfert interne de 876 004 actions ordinaires. La personne déclarant est le « 2023 Grantor Retained Annuity Trust de James J. Kim ». Le 01/08/2025, le trust a distribué 438 002 actions chacune à Susan Y. Kim et John T. Kim lors de deux transactions distinctes Code G (donation véritable) enregistrées à 0,00 $. Après le premier transfert, le trust détenait encore 438 002 actions ; après le second, sa propriété effective est tombée à 0 action. Susan Y. Kim, déjà unique fiduciaire du GRAT, détient désormais directement le premier bloc ; John T. Kim contrôle le second. Aucun titre dérivé n’a été impliqué. Ces transactions ne modifient pas le nombre total d’actions en circulation d’Amkor mais réallouent la propriété au sein de la famille Kim, historiquement détentrice de plus de 10 %. Il n’y a aucune indication de pression de vente sur le marché ouvert ni de recettes en espèces, donc l’impact sur le marché devrait se limiter à de légers changements dans la déclaration de la propriété des initiés.

Das Form 4 für Amkor Technology (AMKR) vom 05.08.2025 beschreibt eine interne Übertragung von 876.004 Stammaktien. Die meldende Person ist der „2023 Grantor Retained Annuity Trust von James J. Kim.“ Am 01.08.2025 verteilte der Trust jeweils 438.002 Aktien an Susan Y. Kim und John T. Kim in zwei separaten Code G (echte Schenkung) Transaktionen, die mit 0,00 $ bewertet wurden. Nach der ersten Übertragung hielt der Trust noch 438.002 Aktien; nach der zweiten sank sein wirtschaftliches Eigentum auf 0 Aktien. Susan Y. Kim, die bereits alleinige Treuhänderin des GRAT ist, hält nun direkt den ersten Block; John T. Kim kontrolliert den zweiten. Es waren keine derivativen Wertpapiere beteiligt. Die Transaktionen verändern nicht die Gesamtzahl der ausstehenden Amkor-Aktien, sondern verlagern das Eigentum innerhalb der Familie Kim, die historisch mehr als 10 % hält. Es gibt keine Hinweise auf Verkaufsdruck am offenen Markt oder Bareinnahmen, sodass die Marktauswirkungen auf geringfügige Veränderungen bei den Insider-Besitzmeldungen beschränkt sein sollten.

Positive
  • None.
Negative
  • None.

Insights

TL;DR: Family GRAT gifted 876k AMKR shares; no cash, minimal market impact.

The filing shows a complete wind-down of the 2023 GRAT’s AMKR stake, transferring shares to Susan and John Kim. Because Code G denotes a gift, there is no price discovery or sale signal. Control remains within the Kim family, so effective insider influence is unchanged. Float and EPS are unaffected. From a trading perspective, the move is neutral; from a governance lens it slightly increases direct stakes held by individual family members, which could marginally raise alignment with shareholder incentives.

Il modulo 4 relativo ad Amkor Technology (AMKR) datato 05/08/2025 descrive un trasferimento interno di 876.004 azioni ordinarie. La persona che ha effettuato la segnalazione è il “2023 Grantor Retained Annuity Trust di James J. Kim.” In data 01/08/2025 il trust ha distribuito 438.002 azioni ciascuno a Susan Y. Kim e John T. Kim in due distinte operazioni Code G (donazione genuina) registrate a 0,00 $. Dopo il primo trasferimento il trust deteneva ancora 438.002 azioni; dopo il secondo, la sua proprietà effettiva è scesa a 0 azioni. Susan Y. Kim, già unica fiduciaria del GRAT, detiene ora direttamente il primo blocco; John T. Kim controlla il secondo. Non sono stati coinvolti titoli derivati. Le operazioni non modificano il totale delle azioni in circolazione di Amkor ma riposizionano la proprietà all’interno della famiglia Kim, storicamente detentrice di oltre il 10%. Non vi sono indicazioni di vendite sul mercato aperto o di ricavi in contanti, quindi l’impatto sul mercato dovrebbe limitarsi a lievi variazioni nella segnalazione della proprietà interna.

La presentación del Formulario 4 para Amkor Technology (AMKR) con fecha 05/08/2025 detalla una transferencia interna de 876,004 acciones comunes. La persona que reporta es el “2023 Grantor Retained Annuity Trust de James J. Kim.” El 01/08/2025, el fideicomiso distribuyó 438,002 acciones a cada uno de Susan Y. Kim y John T. Kim en dos transacciones separadas Código G (donación legítima) registradas a $0.00. Después de la primera transferencia, el fideicomiso aún poseía 438,002 acciones; tras la segunda, su propiedad efectiva cayó a 0 acciones. Susan Y. Kim, quien ya es la única fiduciaria del GRAT, ahora posee directamente el primer bloque; John T. Kim controla el segundo. No se involucraron valores derivados. Las transacciones no alteran el total de acciones en circulación de Amkor, pero reasignan la propiedad dentro de la familia Kim, históricamente poseedora de más del 10%. No hay indicios de presión de venta en el mercado abierto ni ingresos en efectivo, por lo que el impacto en el mercado debería limitarse a pequeños cambios en el reporte de propiedad interna.

2025년 8월 5일자 Amkor Technology (AMKR)의 Form 4 제출서류는 876,004주의 보통주 내부 이전을 상세히 기록하고 있습니다. 보고자는 'James J. Kim의 2023년 Grantor Retained Annuity Trust'입니다. 2025년 8월 1일, 해당 신탁은 각각 438,002주씩Susan Y. KimJohn T. Kim에게 두 건의 별도 Code G (진정한 증여) 거래0.00달러에 배분했습니다. 첫 번째 이전 후 신탁은 여전히 438,002주를 보유했으며, 두 번째 이후에는 실질 소유주가 0주로 감소했습니다. 이미 GRAT의 단독 수탁자인 Susan Y. Kim은 첫 번째 블록을 직접 보유하고 있으며, John T. Kim은 두 번째 블록을 관리합니다. 파생 증권은 포함되지 않았습니다. 이번 거래는 Amkor의 총 발행 주식 수에는 영향을 미치지 않지만 역사적으로 10% 이상 보유한 Kim 가족 내에서 소유권이 재분배된 것입니다. 공개 시장에서의 매도 압력이나 현금 수익은 없으므로 시장 영향은 내부자 소유 보고의 미미한 변동에 국한될 것입니다.

Le dépôt du formulaire 4 pour Amkor Technology (AMKR) daté du 05/08/2025 détaille un transfert interne de 876 004 actions ordinaires. La personne déclarant est le « 2023 Grantor Retained Annuity Trust de James J. Kim ». Le 01/08/2025, le trust a distribué 438 002 actions chacune à Susan Y. Kim et John T. Kim lors de deux transactions distinctes Code G (donation véritable) enregistrées à 0,00 $. Après le premier transfert, le trust détenait encore 438 002 actions ; après le second, sa propriété effective est tombée à 0 action. Susan Y. Kim, déjà unique fiduciaire du GRAT, détient désormais directement le premier bloc ; John T. Kim contrôle le second. Aucun titre dérivé n’a été impliqué. Ces transactions ne modifient pas le nombre total d’actions en circulation d’Amkor mais réallouent la propriété au sein de la famille Kim, historiquement détentrice de plus de 10 %. Il n’y a aucune indication de pression de vente sur le marché ouvert ni de recettes en espèces, donc l’impact sur le marché devrait se limiter à de légers changements dans la déclaration de la propriété des initiés.

Das Form 4 für Amkor Technology (AMKR) vom 05.08.2025 beschreibt eine interne Übertragung von 876.004 Stammaktien. Die meldende Person ist der „2023 Grantor Retained Annuity Trust von James J. Kim.“ Am 01.08.2025 verteilte der Trust jeweils 438.002 Aktien an Susan Y. Kim und John T. Kim in zwei separaten Code G (echte Schenkung) Transaktionen, die mit 0,00 $ bewertet wurden. Nach der ersten Übertragung hielt der Trust noch 438.002 Aktien; nach der zweiten sank sein wirtschaftliches Eigentum auf 0 Aktien. Susan Y. Kim, die bereits alleinige Treuhänderin des GRAT ist, hält nun direkt den ersten Block; John T. Kim kontrolliert den zweiten. Es waren keine derivativen Wertpapiere beteiligt. Die Transaktionen verändern nicht die Gesamtzahl der ausstehenden Amkor-Aktien, sondern verlagern das Eigentum innerhalb der Familie Kim, die historisch mehr als 10 % hält. Es gibt keine Hinweise auf Verkaufsdruck am offenen Markt oder Bareinnahmen, sodass die Marktauswirkungen auf geringfügige Veränderungen bei den Insider-Besitzmeldungen beschränkt sein sollten.

SEC Form 4
FORM 4 UNITED 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).
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*
Shinn John

(Last) (First) (Middle)
C/O RAMBUS INC
4453 NORTH FIRST ST, SUITE 100

(Street)
SAN JOSE CA 95134

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
RAMBUS INC [ RMBS ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
SVP, General Counsel
3. Date of Earliest Transaction (Month/Day/Year)
08/04/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
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)
Code V Amount (A) or (D) Price
Common Stock 08/04/2025 S 790 D $74.6138(1) 20,188 D
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)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Explanation of Responses:
1. All shares sold at an exact price of $74.613800
/s/Brian Wu, by power of attorney 08/05/2025
** Signature of Reporting Person Date
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.
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